Build/Test Tools: Remove the E2E test job from the 5.6 branch.

The E2E test job does not currently perform any meaningful tests, so continuing to run them is not necessary for older branches.

Reviewed by peterwilsoncc, desrosj.
Fixes #51853.


git-svn-id: https://develop.svn.wordpress.org/branches/5.6@49689 602fd350-edb4-49c9-b593-d223f7449a82

.travis.yml

@@ -29,8 +29,6 @@ env:
 
 jobs:
   include:
-  - env: WP_TRAVISCI=test:e2e LOCAL_PHPUNIT=latest PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=
-    name: E2E Tests
   - env: WP_TRAVISCI=lint:php COMPOSER_INSTALL=true NPM_INSTALL=false WP_INSTALL=false
     name: PHP Linting
   - env: WP_TRAVISCI=test:compat COMPOSER_INSTALL=true NPM_INSTALL=false WP_INSTALL=false
@@ -98,7 +96,7 @@ before_script:
     npm ci
   fi
 - |
-  if [[ "$WP_TRAVISCI" == "test:e2e" ]] || [[ "$WP_TRAVISCI" == "test:php" ]]; then
+  if [[ "$WP_TRAVISCI" == "test:php" ]]; then
     npm run env:start
     npm run build
     docker-compose run --rm mysql mysql --version
@@ -108,7 +106,7 @@ before_script:
 - |
   if [[ ${LOCAL_PHP:0:3} == "8.0" ]]; then
     docker-compose run --rm phpunit php ./vendor/bin/phpunit --version
-  elif [[ "$WP_TRAVISCI" == "test:e2e" ]] || [[ "$WP_TRAVISCI" == "test:php" ]]; then
+  elif [[ "$WP_TRAVISCI" == "test:php" ]]; then
     docker-compose run --rm phpunit phpunit --version
   fi
 - |
@@ -133,9 +131,7 @@ before_script:
 
 script:
   - |
-    if [[ "$WP_TRAVISCI" == "test:e2e" ]]; then
-      npm run test:e2e
-    elif [[ "$WP_TRAVISCI" == "test:php" ]]; then
+    if [[ "$WP_TRAVISCI" == "test:php" ]]; then
       npm run test:php -- --verbose -c phpunit.xml.dist &&
       npm run test:php -- --verbose -c phpunit.xml.dist --group ajax &&
       npm run test:php -- --verbose -c tests/phpunit/multisite.xml &&