let RageTExtureManager handle this error

stepmania/src/Sprite.cpp

@@ -127,22 +127,6 @@ retry:
 
 		CollapsePath( sPath );
 	}
-	if( sPath == sDir )
-	{
-		RString sMessage = ssprintf( "A file in '%s' has a texture '%s' that collapses to './'.",
-					     sDir.c_str(), sTextureFile.c_str() );
-		switch( Dialog::AbortRetryIgnore(sMessage) )
-		{
-		case Dialog::abort:
-			RageException::Throw( sMessage );
-		case Dialog::retry:
-			goto retry;
-		case Dialog::ignore:
-			return;
-		default:
-			ASSERT(0);
-		}
-	}
 
 	if( !sPath.empty() )
 	{