InitJira: Remove duplicate COMMENT_LINK_SECTION constant

It's already defined in InitIts, which InitJira extends.

Defining it again, with the same value, causes a 'hiding' warning.

Change-Id: Ib0ed97f61ded67889955f22c10b5f26612af0705

src/main/java/com/googlesource/gerrit/plugins/its/jira/InitJira.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/its/jira/InitJira.java b/src/main/java/com/googlesource/gerrit/plugins/its/jira/InitJira.java
index 38c4fe5..7d4ff16 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/its/jira/InitJira.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/its/jira/InitJira.java
@@ -35,7 +35,6 @@
 /** Initialize the GitRepositoryManager configuration section. */
 @Singleton
 class InitJira extends InitIts {
-  private static final String COMMENT_LINK_SECTION = "commentLink";
   private final String pluginName;
   private final Section.Factory sections;
   private final InitFlags flags;