remove some test from bvt to pvt

src/test/java/com/alibaba/druid/pvt/pool/DiscardTest.java

@@ -1,4 +1,4 @@
-package com.alibaba.druid.bvt.pool;
+package com.alibaba.druid.pvt.pool;
 
 import java.sql.Connection;
 import java.sql.ResultSet;

src/test/java/com/alibaba/druid/pvt/pool/PSCacheTest5.java

@@ -1,4 +1,4 @@
-package com.alibaba.druid.bvt.pool;
+package com.alibaba.druid.pvt.pool;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;

src/test/java/com/alibaba/druid/pvt/pool/TestAbondon.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.alibaba.druid.bvt.pool;
+package com.alibaba.druid.pvt.pool;
 
 import org.junit.Assert;
 import junit.framework.TestCase;