Eliminate MM_SERVER_PATH (#24968)

server/public/utils/fileutils.go

@@ -17,11 +17,6 @@ func CommonBaseSearchPaths() []string {
 		"../../../..",
 	}
 
-	// this enables the server to be used in tests from a different repository
-	if mmPath := os.Getenv("MM_SERVER_PATH"); mmPath != "" {
-		paths = append(paths, mmPath)
-	}
-
 	return paths
 }