remove blank file which is not used

approved
#1

remove blank file which is not used

diff --git a/lib/prometheus_exporter/instrumentation.rb b/lib/prometheus_exporter/instrumentation.rb
index e032422..1c3a484 100644
--- a/lib/prometheus_exporter/instrumentation.rb
+++ b/lib/prometheus_exporter/instrumentation.rb
@@ -2,6 +2,5 @@ require_relative "instrumentation/process"
 require_relative "instrumentation/method_profiler"
 require_relative "instrumentation/sidekiq"
 require_relative "instrumentation/delayed_job"
-require_relative "instrumentation/global"
 require_relative "instrumentation/puma"
 require_relative "instrumentation/hutch"
diff --git a/lib/prometheus_exporter/instrumentation/global.rb b/lib/prometheus_exporter/instrumentation/global.rb
deleted file mode 100644
index e69de29..0000000

GitHub sha: a90abdf5

Approved #2