Revert "BaseTools:code of test python module is moved to edksetup"

This reverts commit df7c81b5b2.

In commint df7c81b5b219c9,used a function to test python module
But the Boolean value of the return value of this function is the
opposite of the Correct result, resulting in an unexpected result

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Tests/RunTests.py

@@ -12,6 +12,14 @@
 import os
 import sys
 import unittest
+
+try:
+    import distutils.util
+except ModuleNotFoundError:
+    sys.exit('''
+Python reported: "No module named 'distutils.util"
+''')
+
 import TestTools
 
 def GetCTestSuite():

edksetup.sh

@@ -177,22 +177,11 @@ function SetupPython()
   SetupPython3
 }
 
-function TestUtilModule()
-{
-  if ( $PYTHON_COMMAND -c "import distutils.util" >/dev/null 2>&1 );then
-    return 1
-  else
-    echo Error: "No module named 'distutils.util"
-    return 0
-  fi
-}
-
 function SourceEnv()
 {
   SetWorkspace &&
-  SetupEnv &&
-  SetupPython &&
-  TestUtilModule
+  SetupEnv
+  SetupPython
 }
 
 I=$#