Let AbbrevsFilter manage itself

chrome/content/zotero/xpcom/zotero.js

@@ -879,10 +879,6 @@ Services.scriptloader.loadSubScript("resource://zotero/polyfill.js");
 		if(Zotero.isConnector) {
 			// if DB lock is released, switch out of connector mode
 			switchConnectorMode(false);
-			try {
-				AbbrevsFilter = Components.classes['@juris-m.github.io/abbrevs-filter;1'].getService(Components.interfaces.nsISupports).wrappedJSObject;
-				AbbrevsFilter.initComponent(Zotero);
-			} catch (e) {}
 		} else if(_waitingForDBLock) {
 			// if waiting for DB lock and we get it, continue init
 			_waitingForDBLock = false;
@@ -912,10 +908,6 @@ Services.scriptloader.loadSubScript("resource://zotero/polyfill.js");
 				// close DB
 				yield Zotero.DB.closeDatabase(true)
 
-				try {
-					yield AbbrevsFilter.db.closeDatabase(true);
-				} catch (e) {}
-
 				if (!Zotero.restarting) {
 					// broadcast that DB lock has been released
 					Zotero.IPC.broadcast("lockReleased");