HBASE-22562 Remove dead code: skipControl

Signed-off-by: Reid Chan <reidchan@apache.org>

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/throttle/PressureAwareCompactionThroughputController.java

@@ -143,13 +143,4 @@ public class PressureAwareCompactionThroughputController extends PressureAwareTh
         + throughputDesc(getMaxThroughput()) + ", activeCompactions=" + activeOperations.size()
         + "]";
   }
-
-  @Override
-  protected boolean skipControl(long deltaSize, long controlSize) {
-    if (deltaSize < controlSize) {
-      return true;
-    } else {
-      return false;
-    }
-  }
 }

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/throttle/PressureAwareFlushThroughputController.java

@@ -128,10 +128,4 @@ public class PressureAwareFlushThroughputController extends PressureAwareThrough
     return "DefaultFlushController [maxThroughput=" + throughputDesc(getMaxThroughput())
         + ", activeFlushNumber=" + activeOperations.size() + "]";
   }
-
-  @Override
-  protected boolean skipControl(long deltaSize, long controlSize) {
-    // for flush, we control the flow no matter whether the flush size is small
-    return false;
-  }
 }

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/throttle/PressureAwareThroughputController.java

@@ -137,14 +137,6 @@ public abstract class PressureAwareThroughputController extends Configured imple
     return sleepTime;
   }
 
-  /**
-   * Check whether to skip control given delta size and control size
-   * @param deltaSize Delta size since last control
-   * @param controlSize Size limit to perform control
-   * @return a boolean indicates whether to skip this control
-   */
-  protected abstract boolean skipControl(long deltaSize, long controlSize);
-
   @Override
   public void finish(String opName) {
     ActiveOperation operation = activeOperations.remove(opName);