Remove unused import.

src/main/java/com/gmail/nossr50/listeners/BlockListener.java

@@ -30,7 +30,6 @@ import com.gmail.nossr50.events.fake.FakePlayerAnimationEvent;
 import com.gmail.nossr50.runnables.StickyPistonTracker;
 import com.gmail.nossr50.skills.gathering.Excavation;
 import com.gmail.nossr50.skills.gathering.Herbalism;
-import com.gmail.nossr50.skills.mining.Mining;
 import com.gmail.nossr50.skills.mining.MiningManager;
 import com.gmail.nossr50.skills.gathering.WoodCutting;
 import com.gmail.nossr50.skills.repair.Repair;