Don't bother doing a full DB reset after sync tests

Tests should make no assumptions about the presence of bundled files and
should do a full resetDB() if they need them. But most tests don't need
them, and they're very slow to install. We can reconsider this if we
drastically speed up DB resetting in tests (e.g., by caching a pristine
data directory).

test/tests/syncRunnerTest.js

@@ -417,11 +417,6 @@ describe("Zotero.Sync.Runner", function () {
 			
 			yield Zotero.Libraries.init();
 		})
-		after(function* () {
-			yield resetDB({
-				thisArg: this
-			});
-		})
 		
 		it("should perform a sync across all libraries and update library versions", function* () {
 			yield Zotero.Users.setCurrentUserID(1);