Revert "Add library lucene-backward-codecs to migrate indices."

This reverts commit 662fb90.

Author: fzs

.classpath

@@ -22,7 +22,6 @@
 	<classpathentry kind="lib" path="ext/wicket-auth-roles-1.4.22.jar" sourcepath="ext/src/wicket-auth-roles-1.4.22.jar" />
 	<classpathentry kind="lib" path="ext/wicket-extensions-1.4.22.jar" sourcepath="ext/src/wicket-extensions-1.4.22.jar" />
 	<classpathentry kind="lib" path="ext/lucene-core-5.5.2.jar" sourcepath="ext/src/lucene-core-5.5.2.jar" />
-	<classpathentry kind="lib" path="ext/lucene-backward-codecs-5.5.2.jar" sourcepath="ext/src/lucene-backward-codecs-5.5.2.jar" />
 	<classpathentry kind="lib" path="ext/lucene-analyzers-common-5.5.2.jar" sourcepath="ext/src/lucene-analyzers-common-5.5.2.jar" />
 	<classpathentry kind="lib" path="ext/lucene-highlighter-5.5.2.jar" sourcepath="ext/src/lucene-highlighter-5.5.2.jar" />
 	<classpathentry kind="lib" path="ext/lucene-memory-5.5.2.jar" sourcepath="ext/src/lucene-memory-5.5.2.jar" />

build.moxie

@@ -145,7 +145,6 @@ dependencies:
 - compile 'org.apache.wicket:wicket-auth-roles:${wicket.version}' :war !org.mockito
 - compile 'org.apache.wicket:wicket-extensions:${wicket.version}' :war !org.mockito
 - compile 'org.apache.lucene:lucene-core:${lucene.version}' :war :fedclient
-- compile 'org.apache.lucene:lucene-backward-codecs:${lucene.version}' :war :fedclient
 - compile 'org.apache.lucene:lucene-analyzers-common:${lucene.version}' :war :fedclient
 - compile 'org.apache.lucene:lucene-highlighter:${lucene.version}' :war :fedclient !org.apache.lucene:lucene-join
 - compile 'org.apache.lucene:lucene-memory:${lucene.version}' :war :fedclient

gitblit.iml

@@ -190,17 +190,6 @@
         </SOURCES>
       </library>
     </orderEntry>
-    <orderEntry type="module-library">
-      <library name="lucene-backward-codecs-5.5.2.jar">
-        <CLASSES>
-          <root url="jar://$MODULE_DIR$/ext/lucene-backward-codecs-5.5.2.jar!/" />
-        </CLASSES>
-        <JAVADOC />
-        <SOURCES>
-          <root url="jar://$MODULE_DIR$/ext/src/lucene-backward-codecs-5.5.2.jar!/" />
-        </SOURCES>
-      </library>
-    </orderEntry>
     <orderEntry type="module-library">
       <library name="lucene-analyzers-common-5.5.2.jar">
         <CLASSES>