Use @SuppressWarnings for checkstyle suppressions & warnings

It's better to use @SuppressWarnings instead of the suppressions file, so that the warning suppression is at the place where it acts.

app/src/main/java/org/schabi/newpipe/local/LocalItemListAdapter.java

@@ -228,6 +228,7 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
         return count;
     }
 
+    @SuppressWarnings("FinalParameters")
     @Override
     public int getItemViewType(int position) {
         if (DEBUG) {
@@ -300,6 +301,7 @@ public class LocalItemListAdapter extends RecyclerView.Adapter<RecyclerView.View
         }
     }
 
+    @SuppressWarnings("FinalParameters")
     @Override
     public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder holder, int position) {
         if (DEBUG) {

app/src/main/java/org/schabi/newpipe/player/Player.java

@@ -682,6 +682,7 @@ public final class Player implements
     //////////////////////////////////////////////////////////////////////////*/
     //region Playback initialization via intent
 
+    @SuppressWarnings("MethodLength")
     public void handleIntent(@NonNull final Intent intent) {
         // fail fast if no play queue was provided
         final String queueCache = intent.getStringExtra(PLAY_QUEUE_KEY);

app/src/main/java/org/schabi/newpipe/player/playqueue/PlayQueueItem.java

@@ -52,6 +52,7 @@ public class PlayQueueItem implements Serializable {
                 item.getUploaderUrl(), item.getStreamType());
     }
 
+    @SuppressWarnings("ParameterNumber")
     private PlayQueueItem(@Nullable final String name, @Nullable final String url,
                           final int serviceId, final long duration,
                           @Nullable final String thumbnailUrl, @Nullable final String uploader,

app/src/main/java/org/schabi/newpipe/streams/Mp4FromDashWriter.java

@@ -142,6 +142,7 @@ public class Mp4FromDashWriter {
         outStream = null;
     }
 
+    @SuppressWarnings("MethodLength")
     public void build(final SharpStream output) throws IOException {
         if (done) {
             throw new RuntimeException("already done");

app/src/main/java/org/schabi/newpipe/streams/WebMWriter.java

@@ -121,6 +121,7 @@ public class WebMWriter implements Closeable {
         clustersOffsetsSizes = null;
     }
 
+    @SuppressWarnings("MethodLength")
     public void build(final SharpStream out) throws IOException, RuntimeException {
         if (!out.canRewind()) {
             throw new IOException("The output stream must be allow seek");

checkstyle/suppressions.xml

@@ -3,13 +3,7 @@
   "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
   "https://checkstyle.org/dtds/suppressions_1_2.dtd">
 <suppressions>
-  <suppress checks="FinalParameters"
-    files="LocalItemListAdapter.java"
-    lines="232,304"/>
-
-  <suppress checks="EmptyBlock"
-    files="ContentSettingsFragment.java"
-    lines="227,245"/>
+  <!-- Use @SuppressWarnings("...") if it is possible, only use this file if it is not -->
 
   <suppress checks="FileLength"
     files="Player.java"/>