Remove unused yii2 composer plugin which was causing an error

.gitlab-ci.yml

@@ -66,9 +66,7 @@ Composer:
   before_script:
     - sudo composer self-update --2
     - composer config github-oauth.github.com "$GITHUB_TOKEN"
-    # patch is necessary to make cweagans/composer-patches work
-    # unzip is required by composer v2
-    - sudo apk add --update --no-cache patch unzip
+    - sudo apk add --update --no-cache patch # necessary to make cweagans/composer-patches work
   script:
     - composer install --ignore-platform-reqs
 

composer.json

@@ -68,7 +68,8 @@
         "symfony/polyfill-mbstring": "*",
         "symfony/polyfill-php70": "*",
         "symfony/polyfill-php72": "*",
-        "symfony/polyfill-php73": "*"
+        "symfony/polyfill-php73": "*",
+        "yiisoft/yii2-composer": "*"
     },
     "extra": {
         "composer-exit-on-patch-failure": true,

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "0cfe3544225f062b58d67960419c5fef",
+    "content-hash": "684975cc5adcdfcc98c4b2aa89354c5a",
     "packages": [
         {
             "name": "bacon/bacon-qr-code",
@@ -2644,61 +2644,6 @@
             ],
             "time": "2020-05-02T11:11:31+00:00"
         },
-        {
-            "name": "yiisoft/yii2-composer",
-            "version": "2.0.9",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/yiisoft/yii2-composer.git",
-                "reference": "d191176c4f8372e397a9e3df27360dca6a70efaa"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/yiisoft/yii2-composer/zipball/d191176c4f8372e397a9e3df27360dca6a70efaa",
-                "reference": "d191176c4f8372e397a9e3df27360dca6a70efaa",
-                "shasum": ""
-            },
-            "require": {
-                "composer-plugin-api": "^1.0 | ^2.0"
-            },
-            "require-dev": {
-                "composer/composer": "^1.0 | ^2.0@dev",
-                "phpunit/phpunit": "<7"
-            },
-            "type": "composer-plugin",
-            "extra": {
-                "class": "yii\\composer\\Plugin",
-                "branch-alias": {
-                    "dev-master": "2.0.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "yii\\composer\\": ""
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Qiang Xue",
-                    "email": "qiang.xue@gmail.com"
-                },
-                {
-                    "name": "Carsten Brandt",
-                    "email": "mail@cebe.cc"
-                }
-            ],
-            "description": "The composer plugin for Yii extension installer",
-            "keywords": [
-                "composer",
-                "extension installer",
-                "yii2"
-            ],
-            "time": "2020-04-20T18:47:46+00:00"
-        },
         {
             "name": "yiisoft/yii2-queue",
             "version": "2.3.0",