Merge branch 'remove-lua-script-remains' into 'master'

Remove final mentions of the LUA script

See merge request gitlab-org/gitlab-exporter!146

Gemfile.lock

 PATH
   remote: .
   specs:
-    gitlab-exporter (11.0.0)
+    gitlab-exporter (11.0.1)
       connection_pool (= 2.2.5)
       pg (= 1.2.3)
       puma (= 5.3.2)

lib/gitlab_exporter/sidekiq.rb

@@ -189,14 +189,9 @@ module GitLab
       def connected?
         return @connected unless @connected.nil?
 
-        # This is also a good "connected check"
         Sidekiq.redis do |conn|
-          # Using administrative commands on conn directly (which is a Redis::Namespace)
-          # will be removed in redis-namespace 2.0.
-          conn.redis.script(:load, QUEUE_JOB_STATS_SCRIPT) unless conn.redis.script(:exists, QUEUE_JOB_STATS_SHA)
+          @connected = (conn.ping == "PONG")
         end
-
-        @connected = true
       rescue Redis::BaseConnectionError => e
         @logger&.error "Error connecting to the Redis: #{e}"
         @connected = false

lib/gitlab_exporter/version.rb

 module GitLab
   module Exporter
-    VERSION = "11.0.0".freeze
+    VERSION = "11.0.1".freeze
   end
 end