Remove unused LocalDiskRepositoryManager import

Change-Id: Ia295c4fa947e35e8e65860035c9765f334179af8

src/main/java/com/googlesource/gerrit/plugins/gitblit/app/GitBlitSettings.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/gitblit/app/GitBlitSettings.java b/src/main/java/com/googlesource/gerrit/plugins/gitblit/app/GitBlitSettings.java
index d7f5641..16b2b2d 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/gitblit/app/GitBlitSettings.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/gitblit/app/GitBlitSettings.java
@@ -31,7 +31,6 @@
 import com.gitblit.IStoredSettings;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.SitePaths;
-import com.google.gerrit.server.git.LocalDiskRepositoryManager;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import com.googlesource.gerrit.plugins.gitblit.GitBlitUrlsConfig;