Simplify some rename pass code.
Simplify some rename pass code.

mohtamohit/CppSharp,u255436/CppSharp,ktopouzi/CppSharp,mono/CppSharp,zillemarco/CppSharp,ktopouzi/CppSharp,inordertotest/CppSharp,ddobrev/CppSharp,ddobrev/CppSharp,ddobrev/CppSharp,ddobrev/CppSharp,inordertotest/CppSharp,mohtamohit/CppSharp,mono/CppSharp,zillemarco/CppSharp,ddobrev/CppSharp,zillemarco/CppSharp,zillemarco/CppSharp,mohtamohit/CppSharp,ktopouzi/CppSharp,inordertotest/CppSharp,u255436/CppSharp,mono/CppSharp,inordertotest/CppSharp,mono/CppSharp,mono/CppSharp,u255436/CppSharp,mohtamohit/CppSharp,inordertotest/CppSharp,u255436/CppSharp,zillemarco/CppSharp,mohtamohit/CppSharp,ktopouzi/CppSharp,ktopouzi/CppSharp,mono/CppSharp,u255436/CppSharp