Strip leading `./` in test mapping spec path

spec/tooling/lib/tooling/test_map_generator_spec.rb

@@ -50,13 +50,13 @@ RSpec.describe Tooling::TestMapGenerator do
       let(:expected_mapping) do
         {
           'lib/gitlab/current_settings.rb' => [
-            './spec/factories_spec.rb'
+            'spec/factories_spec.rb'
           ],
           'lib/feature.rb' => [
-            './spec/factories_spec.rb'
+            'spec/factories_spec.rb'
           ],
           'lib/gitlab/marginalia.rb' => [
-            './spec/factories_spec.rb'
+            'spec/factories_spec.rb'
           ]
         }
       end
@@ -80,16 +80,16 @@ RSpec.describe Tooling::TestMapGenerator do
       let(:expected_mapping) do
         {
           'lib/gitlab/current_settings.rb' => [
-            './spec/factories_spec.rb',
-            './spec/models/project_spec.rb'
+            'spec/factories_spec.rb',
+            'spec/models/project_spec.rb'
           ],
           'lib/feature.rb' => [
-            './spec/factories_spec.rb',
-            './spec/models/project_spec.rb'
+            'spec/factories_spec.rb',
+            'spec/models/project_spec.rb'
           ],
           'lib/gitlab/marginalia.rb' => [
-            './spec/factories_spec.rb',
-            './spec/models/project_spec.rb'
+            'spec/factories_spec.rb',
+            'spec/models/project_spec.rb'
           ]
         }
       end

tooling/lib/tooling/test_map_generator.rb

@@ -17,7 +17,7 @@ module Tooling
         example_groups.each do |example_id, files|
           files.each do |file|
             spec_file = strip_example_uid(example_id)
-            @mapping[file] << spec_file
+            @mapping[file] << spec_file.delete_prefix('./')
           end
         end
       end