BaseTools: dont use enumerate when un-needed

Since we only use the item from the list and not the numeric value,
dont bother with enumerate()

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/Common/Misc.py

@@ -76,7 +76,7 @@ def GetVariableOffset(mapfilepath, efifilepath, varnames):
 def _parseForXcode(lines, efifilepath, varnames):
     status = 0
     ret = []
-    for index, line in enumerate(lines):
+    for line in lines:
         line = line.strip()
         if status == 0 and line == "# Symbols:":
             status = 1