Drop support for releasing via PEAR

PEAR is barely used anymore and registering this fork as a new package on PEAR does not seem worth the effort considering that PEAR install support was going to be dropped in 4.0 anyway.

This means that new releases will no longer be available via PEAR.

Installing via Composer, PHIVE, PHAR download and git clones will still be supported.

.github/workflows/validate.yml

@@ -58,23 +58,3 @@ jobs:
           diff -B ./src/Standards/PSR12/ruleset.xml <(xmllint --format "./src/Standards/PSR12/ruleset.xml")
           diff -B ./src/Standards/Squiz/ruleset.xml <(xmllint --format "./src/Standards/Squiz/ruleset.xml")
           diff -B ./src/Standards/Zend/ruleset.xml <(xmllint --format "./src/Standards/Zend/ruleset.xml")
-
-  pear:
-    name: "PHP: 7.4 | PEAR package validation"
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-
-      - name: Install PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: '7.4'
-          coverage: none
-
-      - name: Validate the PEAR package file contents
-        run: php scripts/validate-pear-package.php
-
-      - name: Validate the PEAR package
-        run: pear package-validate package.xml

README.md

@@ -62,11 +62,6 @@ You will then be able to run PHP_CodeSniffer from the tools directory:
 ./tools/phpcs -h
 ./tools/phpcbf -h
 ```
-### PEAR
-If you use PEAR, you can install PHP_CodeSniffer using the PEAR installer. This will make the `phpcs` and `phpcbf` commands immediately available for use. To install PHP_CodeSniffer using the PEAR installer, first ensure you have [installed PEAR](http://pear.php.net/manual/en/installation.getting.php) and then run the following command:
-```bash
-pear install PHP_CodeSniffer
-```
 ### Git Clone
 You can also download the PHP_CodeSniffer source and run the `phpcs` and `phpcbf` commands directly from the Git clone:
 ```bash