Fixed failing firefox tests

apps/remix-ide-e2e/src/commands/clearEditableContent.ts

@@ -22,7 +22,7 @@ function clearContent (browser: NightwatchBrowser, cssSelector: string, callback
     selection.removeAllRanges()
     selection.addRange(range)
   }, [cssSelector], function () {
-    browser.keys(browser.Keys.BACK_SPACE)
+    browser.sendKeys(cssSelector, browser.Keys.BACK_SPACE)
     .pause(5000)
     callback()
   })

apps/remix-ide-e2e/src/tests/terminal.test.ts

@@ -10,7 +10,6 @@ module.exports = {
 
   'Should execution a simple console command': function (browser: NightwatchBrowser) {
     browser
-    .pause(10000)
     .waitForElementVisible('*[data-id="terminalCli"]', 10000)
     .executeScript('console.log(1 + 1)')
     .journalLastChild('2')
@@ -35,7 +34,6 @@ module.exports = {
   'Should execute remix.help() command': function (browser: NightwatchBrowser) {
     browser
     .waitForElementVisible('*[data-id="terminalCli"]')
-    .clearEditableContent('*[data-id="terminalCliInput"]')
     .executeScript('remix.help()')
     .journalChildIncludes('remix.loadgist(id)')
     .journalChildIncludes('remix.loadurl(url)')