HBASE-22260 Removed deprecated method in ReplicationLoadSink

[anis016]

Removed deprecated methods in ReplicationLoadSink.
Fixes: HBASE-22260

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	169	Docker mode activated.
		_ Prechecks _
+1	hbaseanti	0	Patch does not have any anti-patterns.
+1	@author	0	The patch does not contain any @author tags.
-0	test4tests	0	The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
		_ master Compile Tests _
+1	mvninstall	268	master passed
+1	compile	24	master passed
+1	checkstyle	32	master passed
+1	shadedjars	273	branch has no errors when building our shaded downstream artifacts.
+1	findbugs	65	master passed
+1	javadoc	22	master passed
		_ Patch Compile Tests _
+1	mvninstall	254	the patch passed
+1	compile	24	the patch passed
+1	javac	24	the patch passed
+1	checkstyle	31	the patch passed
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedjars	275	patch has no errors when building our shaded downstream artifacts.
+1	hadoopcheck	538	Patch does not cause any errors with Hadoop 2.7.4 or 3.0.0.
+1	findbugs	70	the patch passed
+1	javadoc	22	the patch passed
		_ Other Tests _
+1	unit	195	hbase-client in the patch passed.
+1	asflicense	11	The patch does not generate ASF License warnings.
		2332

Subsystem	Report/Notes
Docker	Client=17.05.0-ce Server=17.05.0-ce base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-161/1/artifact/out/Dockerfile
GITHUB PR	#161
Optional Tests	dupname asflicense javac javadoc unit findbugs shadedjars hadoopcheck hbaseanti checkstyle compile
uname	Linux e2c1826e7ad8 4.4.0-131-generic #157~14.04.1-Ubuntu SMP Fri Jul 13 08:53:17 UTC 2018 x86_64 GNU/Linux
Build tool	maven
Personality	/testptch/patchprocess/precommit/personality/provided.sh
git revision	master / 12bcb87
maven	version: Apache Maven 3.5.4 (1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z)
Default Java	1.8.0_181
findbugs	v3.1.11
Test Results	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-161/1/testReport/
Max. process+thread count	272 (vs. ulimit of 10000)
modules	C: hbase-client U: hbase-client
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-161/1/console
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