Removed deleted file

src/background.js

-/*	Enables the page action (i.e., the browser toolbar icon).
-	*/
-chrome.runtime.onInstalled.addListener(() => {
-	chrome.declarativeContent.onPageChanged.removeRules(undefined, () => {
-		chrome.declarativeContent.onPageChanged.addRules([{
-			conditions: [ new chrome.declarativeContent.PageStateMatcher({
-				pageUrl: { schemes: [ 'http', 'https' ] },
-			})
-			], actions: [ new chrome.declarativeContent.ShowPageAction() ]
-		}]);
-	});
-});
-
-/*	Toggle the toolbar icon based on whether stickies are, or are not, set to
-	be killed on the current tab.
-
-	This listener receives a message from the content script (contentScript.js);
-	the content script actually determines what the settings for the current
-	tab are.
-	*/
-chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
-	let icons = request.killingStickies ? {
-			"16":	"images/ASK_on_16.png",
-			"32":	"images/ASK_on_32.png",
-			"48":	"images/ASK_on_48.png",
-			"128":	"images/ASK_on_128.png"
-	} : {
-			"16":	"images/ASK_off_16.png",
-			"32":	"images/ASK_off_32.png",
-			"48":	"images/ASK_off_48.png",
-			"128":	"images/ASK_off_128.png"
-	};
-	chrome.pageAction.setIcon({
-		path: icons,
-		tabId: request.tabID || sender.tab.id
-	});
-});