Codechange: C++11 STL has a function for getting the number of CPU cores.

src/os/os2/os2.cpp

@@ -208,11 +208,6 @@ bool GetClipboardContents(char *buffer, const char *last)
 const char *FS2OTTD(const char *name) {return name;}
 const char *OTTD2FS(const char *name) {return name;}
 
-uint GetCPUCoreCount()
-{
-	return 1;
-}
-
 void OSOpenBrowser(const char *url)
 {
 	// stub only