Remove a debugging System.out.println() call (#8472)

Cleanup from
65d5044

Author: jwren

src/io/flutter/sdk/FlutterSdkVersion.java

@@ -129,7 +129,6 @@ private static String readVersionString(@NotNull VirtualFile file) {
           final Map<String, Object> json = new Gson().fromJson(data, new TypeToken<Map<String, Object>>() {
           }.getType());
           if (json != null && json.containsKey("frameworkVersion")) {
-            System.out.println("FlutterSdkVersion.readVersionString NEW " + json.get("frameworkVersion"));
             return (String)json.get("frameworkVersion");
           }
         }