Remove conditionally-skip command, as it doesn't work

It skips based on the current commit,
not the diff of the entire PR.
There doesn't look to be a good workaround to this,
though maybe this would help:
https://javorszky.co.uk/2019/03/11/set-up-circle-ci-to-run-phpcs-on-only-changed-files-in-a-pr/
I opened a feature request to
CircleCI to enable this to work.

.circleci/config.yml

@@ -28,23 +28,6 @@ commands:
             ACTUAL_SIGNATURE=$(php -r "echo hash_file('sha384', 'composer-setup.php');")
             [[ "$EXPECTED_SIGNATURE" == "$ACTUAL_SIGNATURE" ]] && sudo php composer-setup.php --install-dir=/bin --version=1.10.16 --filename=composer || exit 1
 
-  conditionally-skip:
-    description: "Skip if the current commit has no change in relevant directories"
-    parameters:
-      directories:
-        type: string
-    steps:
-      - run:
-          name: Checking whether relevant files were changed
-          command: |
-            sudo apt-get update && sudo apt-get install jq
-            echo "Here is the ORG: $ORG and the PROJECT: $PROJECT and the PR number: $CIRCLE_PR_NUMBER"
-            API_URL=url="https://api.github.com/repos/$ORG/$PROJECT/pulls/$CIRCLE_PR_NUMBER
-            TARGET_BRANCH=$( curl "$url" | jq '.base.ref' | tr -d '"')
-            echo "The target branch URL is: $TARGET_BRANCH"
-            CHANGED_FILES="$( git diff << pipeline.git.branch >> $TARGET_BRANCH --name-only --diff-filter=ACMRT << parameters.directories >> )"
-            if [ -z "$CHANGED_FILES" ] && [ -z "$CIRCLE_TAG" ]; then echo "No change to relevant file, exiting job" && circleci-agent step halt; fi
-
 jobs:
   lint:
     executor:
@@ -74,8 +57,6 @@ jobs:
           MYSQL_ROOT_PASSWORD: wordpress
     steps:
       - checkout
-      - conditionally-skip:
-          directories: php tests/php
       - run:
           name: Installing the mysqli extension
           command: sudo docker-php-ext-install mysqli
@@ -104,8 +85,6 @@ jobs:
     executor: php
     steps:
       - checkout
-      - conditionally-skip:
-          directories: js tests/js
       - node/install:
           node-version: lts
       - run: npm ci && npm run test:js
@@ -115,8 +94,6 @@ jobs:
       image: ubuntu-1604:202004-01
     steps:
       - checkout
-      - conditionally-skip:
-          directories: php js css tests/e2e
       - run: sudo apt-get update && sudo apt-get install php php-xml
       - install-composer
       - node/install: