BaseTools: Remove equality operator with None

replace "== None" with "is None" and "!= None" with "is not None"

Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@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/UPT/Object/Parser/InfMisc.py

@@ -135,9 +135,9 @@ class InfSpecialCommentObject(InfSectionCommonDef):
 # An encapsulate of Error for INF parser.
 # 
 def ErrorInInf(Message=None, ErrorCode=None, LineInfo=None, RaiseError=True):
-    if ErrorCode == None:
+    if ErrorCode is None:
         ErrorCode = ToolError.FORMAT_INVALID
-    if LineInfo == None:
+    if LineInfo is None:
         LineInfo = ['', -1, '']
     Logger.Error("InfParser", 
                  ErrorCode,