Bug 1521193 - Remove pluginGlue.manifest from SeaMonkey installer. r=frg CLOSED TREE

Port Bug 1519737 [move pluginProblemBinding.css to the UA style sheet cache].

suite/installer/package-manifest.in

@@ -288,7 +288,6 @@
 @RESPATH@/components/PeerConnection.manifest
 #endif
 @RESPATH@/components/PlacesCategoriesStarter.js
-@RESPATH@/components/pluginGlue.manifest
 @RESPATH@/components/ProcessSingleton.manifest
 @RESPATH@/components/MainProcessSingleton.js
 @RESPATH@/components/ContentProcessSingleton.js