Remove obsolete MSVC version tests.

Don't compare __VISUALC__ with versions 1200 (VC6) and earlier, such tests are
always true or always false now that we don't support VC6 any more, so just
remove them simplifying the code.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76548 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/stringimpl.h

@@ -115,7 +115,7 @@ struct WXDLLIMPEXP_BASE wxStringData
   void  Lock()   { if ( !IsEmpty() ) nRefs++;                    }
 
   // VC++ will refuse to inline Unlock but profiling shows that it is wrong
-#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
+#if defined(__VISUALC__)
   __forceinline
 #endif
   // VC++ free must take place in same DLL as allocation when using non dll
@@ -327,7 +327,7 @@ public:
       { return wxStdString(c_str(), length()); }
 #endif
 
-#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
+#if defined(__VISUALC__)
     // disable warning about Unlock() below not being inlined (first, it
     // seems to be inlined nevertheless and second, even if it isn't, there
     // is nothing we can do about this
@@ -341,7 +341,7 @@ public:
       GetStringData()->Unlock();
   }
 
-#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
+#if defined(__VISUALC__)
     #pragma warning(pop)
 #endif