remove unnecessary/unneeded/unused VersionCheck()

Themes/default/Scripts/00 ThemeInfo.lua

@@ -6,14 +6,3 @@ themeInfo = {
 	Date = "00000000",
 	Internal = "dev 00000000-0000 | i0000",
 };
-
--- VersionCheck()
--- Checks the version of StepMania in a fashion that (hopefully)
--- all SM4 versions can understand. Returns true if not SVN.
-function VersionCheck()
-	local r = SortOrder:Reverse();
-	if r['SortOrder_Roulette'] ~= 18 then return true; end;
-
-	-- fallthrough; we should get here if using SVN.
-	return false;
-end;