BaseTools: AutoGen - remove function no one calls

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>

BaseTools/Source/Python/AutoGen/GenPcdDb.py

@@ -261,17 +261,6 @@ def PackGuid(GuidStructureValue):
                 )
     return Buffer
 
-def toHex(s):
-    lst = []
-    for ch in s:
-        hv = hex(ord(ch)).replace('0x', ' ')
-        if len(hv) == 1:
-            hv = '0'+hv
-        lst.append(hv)
-    if lst:
-        return reduce(lambda x,y:x+y, lst)
-    else:
-        return 'empty'
 ## DbItemList
 #
 #  The class holds the Pcd database items. ItemSize if not zero should match the item datum type in the C structure.