Remove unnecessary http/s regex URL match

spec/lib/generators/gitlab/usage_metric_definition_generator_spec.rb

@@ -12,14 +12,14 @@ RSpec.describe Gitlab::UsageMetricDefinitionGenerator do
   before do
     stub_const("#{described_class}::TOP_LEVEL_DIR", temp_dir)
     # Stub Prometheus requests from Gitlab::Utils::UsageData
-    stub_request(:get, %r{^https?://::1:9090/-/ready})
+    stub_request(:get, 'https://::1:9090/-/ready')
       .to_return(
         status: 200,
         body: [{}].to_json,
         headers: { 'Content-Type' => 'application/json' }
       )
 
-    stub_request(:get, %r{^https?://::1:9090/api/v1/query\?query=.*})
+    stub_request(:get, %r{^https://::1:9090/api/v1/query\?query=.*})
       .to_return(
         status: 200,
         body: [{}].to_json,