Address Gears test fail - Cleanup Function libraries (#3840)

* Check Gears test fail

* Check modules package

* Revert all changes in Makefile

* Cleanup Function libraries

src/test/java/redis/clients/jedis/commands/commandobjects/CommandObjectsTriggersAndFunctionsCommandsTest.java

@@ -7,9 +7,11 @@
 
 import java.util.ArrayList;
 import java.util.List;
-
+import org.junit.After;
 import org.junit.Test;
+
 import redis.clients.jedis.RedisProtocol;
+import redis.clients.jedis.exceptions.JedisDataException;
 import redis.clients.jedis.gears.TFunctionListParams;
 import redis.clients.jedis.gears.TFunctionLoadParams;
 import redis.clients.jedis.gears.resps.GearsLibraryInfo;
@@ -23,6 +25,13 @@ public CommandObjectsTriggersAndFunctionsCommandsTest(RedisProtocol protocol) {
     super(protocol);
   }
 
+  @After
+  public void tearDown() throws Exception {
+    try {
+      exec(commandObjects.tFunctionDelete("lib"));
+    } catch (JedisDataException de) { }
+  }
+
   @Test
   public void testTFunctionLoadAndCall() {
     String libraryCode = "#!js api_version=1.0 name=lib\n" +