Remove user auth logic

ee/lib/ee/api/api_guard.rb

@@ -10,8 +10,7 @@ module EE
         def find_user_from_sources
           find_user_from_access_token ||
             find_user_from_job_token ||
-            find_user_from_warden ||
-            find_user_from_scim_token
+            find_user_from_warden
         end
       end
     end

ee/lib/ee/gitlab/auth/user_auth_finders.rb

@@ -22,29 +22,6 @@ module EE
 
           job.user
         end
-
-        def find_oauth_access_token
-          return if scim_request?
-
-          super
-        end
-
-        def find_user_from_scim_token
-          return unless scim_request?
-
-          token = Doorkeeper::OAuth::Token.from_request(current_request, *Doorkeeper.configuration.access_token_methods)
-          return unless token
-
-          # TODO Use `ScimOauthAccessToken`
-          scim_token = PersonalAccessToken.find_by_token(token)
-          raise ::Gitlab::Auth::UnauthorizedError unless scim_token
-
-          scim_token.user
-        end
-
-        def scim_request?
-          current_request.path.starts_with?("/api/scim/")
-        end
       end
     end
   end

ee/spec/lib/gitlab/auth/user_auth_finders_spec.rb

@@ -64,25 +64,4 @@ describe Gitlab::Auth::UserAuthFinders do
       it_behaves_like 'find user from job token'
     end
   end
-
-  describe '#find_user_from_scim_token' do
-    let(:token) { create(:personal_access_token, user: user) }
-
-    before do
-      allow(request).to receive(:path).and_return('/api/scim/')
-      allow(self).to receive(:current_request).and_return(request)
-    end
-
-    it "returns an Unauthorized exception for an invalid token" do
-      env['HTTP_AUTHORIZATION'] = "Bearer invalid"
-
-      expect { find_user_from_scim_token }.to raise_error(Gitlab::Auth::UnauthorizedError)
-    end
-
-    it "return user if token is valid" do
-      env['HTTP_AUTHORIZATION'] = "Bearer #{token.token}"
-
-      expect(find_user_from_scim_token).to eq(user)
-    end
-  end
 end