CommentsIT: Remove declaration of exception that is never thrown

Change-Id: I2d631bdc84d8334c2f53fc3a4909e306cbd775e4
Signed-off-by: Edwin Kempin <ekempin@google.com>
diff --git a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/server/change/CommentsIT.java b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/server/change/CommentsIT.java
index 90e0211..16dbee3 100644
--- a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/server/change/CommentsIT.java
+++ b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/server/change/CommentsIT.java
@@ -64,7 +64,6 @@
 import java.util.function.Supplier;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
-import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.lib.ObjectReader;
 import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.lib.Repository;
@@ -861,8 +860,7 @@
     return comment;
   }
 
-  private List<RevCommit> getCommits(Change.Id changeId)
-      throws IOException, ConfigInvalidException {
+  private List<RevCommit> getCommits(Change.Id changeId) throws IOException {
     try (Repository repo = repoManager.openRepository(project);
         RevWalk revWalk = new RevWalk(repo)) {
       Ref metaRef = repo.exactRef(RefNames.changeMetaRef(changeId));