Remove duplicate log

The function prepareRetry() already logs a more detailed message:

    Retrying with -mXXXX...

server/src/main/java/com/genymobile/scrcpy/video/SurfaceEncoder.java

@@ -116,7 +116,6 @@ public class SurfaceEncoder implements AsyncProcessor {
                     if (!prepareRetry(size)) {
                         throw e;
                     }
-                    Ln.i("Retrying...");
                     alive = true;
                 } finally {
                     reset.setRunningMediaCodec(null);