ADD: Redirect to NUL

src/platform/svn2revisioninc.exe.cmd

@@ -3,9 +3,9 @@
 set REVISION_TXT=%1\revision.txt
 set REVISION_INC=%1\dcrevision.inc
 
-del /Q %REVISION_TXT%
-del /Q %REVISION_INC%
-copy ..\units\dcrevision.inc %REVISION_INC%
+del /Q %REVISION_TXT% 2> nul
+del /Q %REVISION_INC% 2> nul
+copy ..\units\dcrevision.inc %REVISION_INC% > nul
 
 svnversion -n ..\ > %REVISION_TXT%