remove redundant extends object

Author: kezhenxu94

src/main/java/org/apache/ibatis/executor/result/DefaultResultHandler.java

@@ -39,7 +39,7 @@ public DefaultResultHandler(ObjectFactory objectFactory) {
   }
 
   @Override
-  public void handleResult(ResultContext<? extends Object> context) {
+  public void handleResult(ResultContext<?> context) {
     list.add(context.getResultObject());
   }
 

src/main/java/org/apache/ibatis/type/UnknownTypeHandler.java

@@ -68,8 +68,8 @@ public Object getNullableResult(CallableStatement cs, int columnIndex)
     return cs.getObject(columnIndex);
   }
 
-  private TypeHandler<? extends Object> resolveTypeHandler(Object parameter, JdbcType jdbcType) {
-    TypeHandler<? extends Object> handler;
+  private TypeHandler<?> resolveTypeHandler(Object parameter, JdbcType jdbcType) {
+    TypeHandler<?> handler;
     if (parameter == null) {
       handler = OBJECT_TYPE_HANDLER;
     } else {