Remove some redundant virtual specifiers on overriden functions.

llvm-svn: 222024
diff --git a/clang/lib/Frontend/Rewrite/RewriteObjC.cpp b/clang/lib/Frontend/Rewrite/RewriteObjC.cpp
index be4f82d..3350815 100644
--- a/clang/lib/Frontend/Rewrite/RewriteObjC.cpp
+++ b/clang/lib/Frontend/Rewrite/RewriteObjC.cpp
@@ -321,7 +321,7 @@
     void RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
                                       std::string &Result);
 
-    virtual void Initialize(ASTContext &context) override = 0;
+    void Initialize(ASTContext &context) override = 0;
 
     // Metadata Rewriting.
     virtual void RewriteMetaDataIntoBuffer(std::string &Result) = 0;
@@ -513,7 +513,7 @@
                                                      silenceMacroWarn) {}
     
     ~RewriteObjCFragileABI() {}
-    virtual void Initialize(ASTContext &context) override;
+    void Initialize(ASTContext &context) override;
 
     // Rewriting metadata
     template<typename MethodIterator>