Remove Target::GetBasicType()

I was experimenting with it briefly, and then settled on Target::GetTypeSystem + TypeSystem::GetBasicType, so this API is not necessary to have

Thanks to Ryan Brown for bringing it to my attention

llvm-svn: 247195

lldb/include/lldb/Target/Target.h

@@ -1233,11 +1233,6 @@ public:
     TypeSystem*
     GetTypeSystemForLanguage (lldb::LanguageType language);
     
-    CompilerType
-    GetBasicType (lldb::LanguageType language,
-                  lldb::BasicType basic_type,
-                  size_t size = 0);
-    
     ClangASTImporter *
     GetClangASTImporter();