Fix checkstyle

Author: gryamy

matrix/matrix-android/matrix-gradle-plugin/src/main/java/com/tencent/matrix/trace/TraceClassWriter.java

@@ -24,12 +24,12 @@
  */
 class TraceClassWriter extends ClassWriter {
     private ClassLoader mClassLoader;
-    public TraceClassWriter(int flags, ClassLoader classLoader) {
+    TraceClassWriter(int flags, ClassLoader classLoader) {
         super(flags);
         mClassLoader = classLoader;
     }
 
-    public TraceClassWriter(ClassReader classReader, int flags, ClassLoader classLoader) {
+    TraceClassWriter(ClassReader classReader, int flags, ClassLoader classLoader) {
         super(classReader, flags);
         mClassLoader = classLoader;
     }