Remove trailing whitespace in files

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=135386752

java/google/registry/util/TeeOutputStream.java

@@ -29,7 +29,7 @@ public final class TeeOutputStream extends OutputStream {
 
   private final ImmutableList<? extends OutputStream> outputs;
   private boolean isClosed;
-  
+
   public TeeOutputStream(@WillNotClose Iterable<? extends OutputStream> outputs) {
     this.outputs = ImmutableList.copyOf(outputs);
     checkArgument(!this.outputs.isEmpty(), "must provide at least one output stream");