diff --git a/test/staging/sm/Array/toLocaleString.js b/test/staging/sm/Array/toLocaleString.js
index 0a57ba5cbd..5cb7907a0e 100644
--- a/test/staging/sm/Array/toLocaleString.js
+++ b/test/staging/sm/Array/toLocaleString.js
@@ -8,7 +8,6 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict";
 
 Object.defineProperty(String.prototype, "toLocaleString", {
     get() {
@@ -19,4 +18,3 @@ Object.defineProperty(String.prototype, "toLocaleString", {
 })
 
 assert.sameValue(["test"].toLocaleString(), "string");
-
diff --git a/test/staging/sm/Promise/for-of-iterator-uses-getv.js b/test/staging/sm/Promise/for-of-iterator-uses-getv.js
index 7609ac7622..fd19997533 100644
--- a/test/staging/sm/Promise/for-of-iterator-uses-getv.js
+++ b/test/staging/sm/Promise/for-of-iterator-uses-getv.js
@@ -8,7 +8,8 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict"; // Use strict-mode to ensure |this| arguments aren't converted to objects.
+
+// strict-mode to ensure |this| arguments aren't converted to objects.
 
 var emptyIterator = {
   next() {
@@ -30,4 +31,3 @@ Object.defineProperty(Number.prototype, Symbol.iterator, {
 Promise.all(0);
 Promise.allSettled(0);
 Promise.race(0);
-
diff --git a/test/staging/sm/Proxy/proxy-no-receiver-overwrite.js b/test/staging/sm/Proxy/proxy-no-receiver-overwrite.js
index 1d45f349d0..919f76e7e3 100644
--- a/test/staging/sm/Proxy/proxy-no-receiver-overwrite.js
+++ b/test/staging/sm/Proxy/proxy-no-receiver-overwrite.js
@@ -8,7 +8,6 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict";
 
 var y = new Proxy({}, {
     getOwnPropertyDescriptor(target, key) {
@@ -28,4 +27,3 @@ var y = new Proxy({}, {
 // This will invoke [[Set]] on the target, with the proxy as receiver.
 assert.throws(TypeError, () => y.a = 1);
 assert.throws(TypeError, () => y.b = 2);
-
diff --git a/test/staging/sm/TypedArray/seal-and-freeze.js b/test/staging/sm/TypedArray/seal-and-freeze.js
index ccf20d22cb..7e01d14f53 100644
--- a/test/staging/sm/TypedArray/seal-and-freeze.js
+++ b/test/staging/sm/TypedArray/seal-and-freeze.js
@@ -8,7 +8,6 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict";
 
 // Seal
 assert.sameValue(Object.isSealed(new Int32Array(2)), false);
@@ -54,4 +53,3 @@ array = new Int32Array(1);
 assert.throws(TypeError, () => Object.freeze(array));
 assert.sameValue(Object.isExtensible(array), false);
 assert.sameValue(Object.isFrozen(array), false);
-
diff --git a/test/staging/sm/eval/exhaustive-global-strictcaller-direct-normalcode.js b/test/staging/sm/eval/exhaustive-global-strictcaller-direct-normalcode.js
index 93dc9dfd74..cc833bb2e2 100644
--- a/test/staging/sm/eval/exhaustive-global-strictcaller-direct-normalcode.js
+++ b/test/staging/sm/eval/exhaustive-global-strictcaller-direct-normalcode.js
@@ -10,7 +10,6 @@ description: |
   eval in all its myriad flavors
 esid: pending
 ---*/
-"use strict";
 
 var x = 17;
 
diff --git a/test/staging/sm/eval/exhaustive-global-strictcaller-direct-strictcode.js b/test/staging/sm/eval/exhaustive-global-strictcaller-direct-strictcode.js
index 3c5e54c905..32a73e4664 100644
--- a/test/staging/sm/eval/exhaustive-global-strictcaller-direct-strictcode.js
+++ b/test/staging/sm/eval/exhaustive-global-strictcaller-direct-strictcode.js
@@ -10,7 +10,6 @@ description: |
   eval in all its myriad flavors
 esid: pending
 ---*/
-"use strict";
 
 var x = 17;
 
diff --git a/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-normalcode.js b/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-normalcode.js
index c619f2dc22..510e199261 100644
--- a/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-normalcode.js
+++ b/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-normalcode.js
@@ -10,7 +10,6 @@ description: |
   eval in all its myriad flavors
 esid: pending
 ---*/
-"use strict";
 
 var x = 17;
 
diff --git a/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-strictcode.js b/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-strictcode.js
index ad5271f2ec..bf0d3b3f16 100644
--- a/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-strictcode.js
+++ b/test/staging/sm/eval/exhaustive-global-strictcaller-indirect-strictcode.js
@@ -10,7 +10,6 @@ description: |
   eval in all its myriad flavors
 esid: pending
 ---*/
-"use strict";
 
 var x = 17;
 
diff --git a/test/staging/sm/eval/undeclared-name-in-nested-strict-eval.js b/test/staging/sm/eval/undeclared-name-in-nested-strict-eval.js
index 051f9d28d7..79be854dec 100644
--- a/test/staging/sm/eval/undeclared-name-in-nested-strict-eval.js
+++ b/test/staging/sm/eval/undeclared-name-in-nested-strict-eval.js
@@ -10,7 +10,6 @@ description: |
   Verify that we don't optimize free names to gnames in eval code that's global, when the name refers to a binding introduced by a strict mode eval frame
 esid: pending
 ---*/
-"use strict";
 
 var x = "global";
 assert.sameValue(eval('var x = "eval"; eval("x")'), "eval");
diff --git a/test/staging/sm/global/delete-global-NaN-property.js b/test/staging/sm/global/delete-global-NaN-property.js
index ff7e023386..45bfda16dc 100644
--- a/test/staging/sm/global/delete-global-NaN-property.js
+++ b/test/staging/sm/global/delete-global-NaN-property.js
@@ -10,7 +10,6 @@ description: |
   |delete window.NaN| should throw a TypeError
 esid: pending
 ---*/
-"use strict"
 
 var g = this, v = false;
 try
diff --git a/test/staging/sm/lexical-environment/block-scoped-functions-strict.js b/test/staging/sm/lexical-environment/block-scoped-functions-strict.js
index f8e1112183..3825ae86f1 100644
--- a/test/staging/sm/lexical-environment/block-scoped-functions-strict.js
+++ b/test/staging/sm/lexical-environment/block-scoped-functions-strict.js
@@ -8,7 +8,6 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict"
 
 var log = "";
 
diff --git a/test/staging/sm/object/toLocaleString-01.js b/test/staging/sm/object/toLocaleString-01.js
index dad8621324..1965a910ee 100644
--- a/test/staging/sm/object/toLocaleString-01.js
+++ b/test/staging/sm/object/toLocaleString-01.js
@@ -8,7 +8,6 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict";
 
 Object.defineProperty(String.prototype, "toString", {
     get() {
@@ -18,4 +17,3 @@ Object.defineProperty(String.prototype, "toString", {
     }
 })
 assert.sameValue(Object.prototype.toLocaleString.call("test"), "string");
-
diff --git a/test/staging/sm/regress/regress-640075.js b/test/staging/sm/regress/regress-640075.js
index 27628e8ac9..ba622500cb 100644
--- a/test/staging/sm/regress/regress-640075.js
+++ b/test/staging/sm/regress/regress-640075.js
@@ -10,9 +10,8 @@ description: |
   pending
 esid: pending
 ---*/
-"use strict";
+
 assert.throws(
     SyntaxError,
     () => eval("(function() { eval(); function eval() {} })")
 )
-