Elimina el plugin Redmine Git Hosting

Finalmente se descarta por los problemas de configuración y potencial
brecha de seguridad al requerir acceso global al puerto ssh.

plugins/redmine_git_hosting/.rubocop.yml

@@ -1,60 +0,0 @@
-require:
-  - rubocop-rspec
-  - rubocop-performance
-
-Rails:
-  Enabled: true
-
-AllCops:
-  TargetRubyVersion: 2.5
-  TargetRailsVersion: 5.2
-  Include:
-    - '**/*.ruby'
-    - '**/*.rake'
-    - '**/*.rb'
-    - '**/*.rsb'
-    - '**/Rakefile'
-    - '**/Gemfile'
-
-Metrics/AbcSize:
-  Max: 65
-
-Metrics/BlockLength:
-  Max: 60
-
-Metrics/ClassLength:
-  Enabled: false
-
-Metrics/CyclomaticComplexity:
-  Max: 20
-
-Metrics/LineLength:
-  Max: 140
-
-Metrics/MethodLength:
-  Max: 60
-
-Metrics/ModuleLength:
-  Enabled: false
-
-Metrics/PerceivedComplexity:
-  Max: 25
-
-Rails/SkipsModelValidations:
-  Enabled: false
-
-Rails/CreateTableWithTimestamps:
-  Enabled: false
-
-# app/model/application_record.rb is missing in redmine, we can't use ApplicationRecord
-Rails/ApplicationRecord:
-  Enabled: false
-
-Style/FrozenStringLiteralComment:
-  Enabled: false
-
-Style/AutoResourceCleanup:
-  Enabled: true
-
-Style/Documentation:
-  Enabled: false