[TASK] Drop PHP_CodeSniffer

This tool is not well-maintained anymore, and it has no PER2 coding
standard, which is a blocker for us moving to PER2.

PHP-CS-Fixer already has a PER2 coding standard. If we use PHP-CS-Fixer
on PER2 and PHP_CodeSniffer on PSR12 (the latest available standard there),
both tools would keep overwriting each other's changes endlessly, and
they would never agree on the correct formatting.

.gitattributes

@@ -5,7 +5,6 @@
 /.phive/ export-ignore
 /CODE_OF_CONDUCT.md export-ignore
 /config/ export-ignore
-/phpcs.xml export-ignore
 /phpunit.xml export-ignore
 /psalm.baseline.xml export-ignore
 /psalm.xml export-ignore

.github/workflows/ci.yml

@@ -126,7 +126,6 @@ jobs:
           - fixer
           - md
           - psalm
-          - sniff
         php-version:
           - '8.2'
 
@@ -159,7 +158,7 @@ jobs:
         run: composer install --no-progress
 
       - name: Install development tools
-        run: phive --no-progress install --trust-gpg-keys 0FDE18AE1D09E19F60F6B1CBC00543248C87FB13,BBAB5DF0A0D6672989CF1869E82B2FB314E9906E,A972B9ABB95D0B760B51442231C7E470E2138192,9882DD2B38813C08EA651B69A4E55EA12C7C085C,2DE50EB60C013FFFA831040D12CE0F1D262429A5
+        run: phive --no-progress install --trust-gpg-keys 0FDE18AE1D09E19F60F6B1CBC00543248C87FB13,BBAB5DF0A0D6672989CF1869E82B2FB314E9906E
 
       - name: Run Command
         run: composer ci:php:${{ matrix.command }}

.phive/phars.xml

@@ -2,7 +2,6 @@
 <phive xmlns="https://phar.io/phive">
   <phar name="composer-normalize" version="^2.36.0" installed="2.36.0" location="./.phive/composer-normalize" copy="false"/>
   <phar name="php-cs-fixer" version="^3.26.1" installed="3.26.1" location="./.phive/php-cs-fixer" copy="false"/>
-  <phar name="phpcs" version="^3.7.2" installed="3.7.2" location="./.phive/phpcs" copy="false"/>
   <phar name="phpmd" version="^2.13.0" installed="2.13.0" location="./.phive/phpmd" copy="false"/>
   <phar name="psalm" version="^5.15.0" installed="5.15.0" location="./.phive/psalm" copy="false"/>
 </phive>

composer.json

@@ -83,11 +83,9 @@
         "ci:php:lint": "\"./vendor/bin/parallel-lint\" config src tests",
         "ci:php:md": "\"./.phive/phpmd\" src text config/phpmd.xml",
         "ci:php:psalm": "\"./.phive/psalm\" --show-info=false",
-        "ci:php:sniff": "\"./.phive/phpcs\" config src tests",
         "ci:static": [
             "@ci:composer:normalize",
             "@ci:php:lint",
-            "@ci:php:sniff",
             "@ci:php:fixer",
             "@ci:php:md",
             "@ci:php:psalm"
@@ -111,7 +109,6 @@
         "ci:php:lint": "Lints the PHP files for syntax errors.",
         "ci:php:md": "Checks the code complexity with PHPMD.",
         "ci:php:psalm": "Checks the types with Psalm.",
-        "ci:php:sniff": "Checks the code style with PHP_CodeSniffer.",
         "ci:static": "Runs all static code analysis checks for the code and the composer.json.",
         "ci:tests": "Runs all dynamic tests (i.e., currently, the unit tests).",
         "ci:tests:sof": "Runs the unit tests and stops at the first failure.",