Remove initial jitter for dispatcher

It was always zero for the default polling interval, so it was doing nothing
and we didn't even realise ^_^U

Author: rosa

lib/solid_queue/dispatcher.rb

@@ -46,10 +46,6 @@ def stop_concurrency_maintenance
         concurrency_clerk.stop
       end
 
-      def initial_jitter
-        Kernel.rand(0...polling_interval)
-      end
-
       def metadata
         super.merge(batch_size: batch_size, concurrency_maintenance_interval: concurrency_clerk&.interval)
       end

lib/solid_queue/processes/base.rb

@@ -5,15 +5,6 @@ module Processes
     class Base
       include Callbacks # Defines callbacks needed by other concerns
       include AppExecutor, Registrable, Interruptible, Procline
-
-      private
-        def observe_initial_delay
-          interruptible_sleep(initial_jitter)
-        end
-
-        def initial_jitter
-          0
-        end
     end
   end
 end

lib/solid_queue/processes/runnable.rb

@@ -9,9 +9,7 @@ module Runnable
     def start
       @stopping = false
 
-      observe_initial_delay
       run_callbacks(:boot) { boot }
-
       start_loop
     end