Revert "Fix typo in "Gerrit-Module""

This reverts commit 5fd94f1d9e2cffef675f36dcca4fc504b15c55b4.

Reason for revert: Became obsolete, because Change 205530 is also reverted. 

Change-Id: I1beaedd01f7cf68c547de86e10fb892333ff0a4b

BUILD

diff --git a/BUILD b/BUILD
index f68cdaf..edd94b3 100644
--- a/BUILD
+++ b/BUILD
@@ -7,7 +7,7 @@
     srcs = ["java/com/googlesource/gerrit/plugins/imagediff/ImageDiffModule.java"],
     manifest_entries = [
         "Gerrit-PluginName: image-diff",
-        "Gerrit-Module: com.googlesource.gerrit.plugins.imagediff.ImageDiffModule",
+        "Gerrit-Module: com.googlesource.gerrit.plugins.codemirror.ImageDiffModule",
         "Implementation-Title: Image Diff plugin",
     ],
     resource_jars = [":image-diff-static"],