Codechange: Use platform independent C++11 function for sleeping on a thread.

src/os/os2/os2.cpp

@@ -205,15 +205,6 @@ bool GetClipboardContents(char *buffer, const char *last)
 }
 
 
-void CSleep(int milliseconds)
-{
-#ifndef __INNOTEK_LIBC__
-	delay(milliseconds);
-#else
-	usleep(milliseconds * 1000);
-#endif
-}
-
 const char *FS2OTTD(const char *name) {return name;}
 const char *OTTD2FS(const char *name) {return name;}
 

src/os/unix/unix.cpp

@@ -273,14 +273,6 @@ bool GetClipboardContents(char *buffer, const char *last)
 #endif
 
 
-/* multi os compatible sleep function */
-
-void CSleep(int milliseconds)
-{
-	usleep(milliseconds * 1000);
-}
-
-
 #ifndef __APPLE__
 uint GetCPUCoreCount()
 {

src/os/windows/win32.cpp

@@ -544,12 +544,6 @@ bool GetClipboardContents(char *buffer, const char *last)
 }
 
 
-void CSleep(int milliseconds)
-{
-	Sleep(milliseconds);
-}
-
-
 /**
  * Convert to OpenTTD's encoding from that of the local environment.
  * When the project is built in UNICODE, the system codepage is irrelevant and