Fix pylint unused-* warnings in webkitpy/tool.

third_party/WebKit/Tools/Scripts/webkitpy/tool/commands/flakytests.py

 # Copyright (c) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 10 matching lines @@
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import logging
 
-from webkitpy.common.net import sheriff_calendar
 from webkitpy.layout_tests.layout_package.bot_test_expectations import BotTestExpectationsFactory
-from webkitpy.layout_tests.models.test_expectations import TestExpectationParser
 from webkitpy.layout_tests.models.test_expectations import TestExpectations
 from webkitpy.layout_tests.models.test_expectations import TestExpectationsModel
 from webkitpy.tool.commands.command import Command
 
 
 _log = logging.getLogger(__name__)
 
 
 class FlakyTests(Command):
     name = "print-flaky-tests"
@@ skipping 24 matching lines @@
         self.expectations_factory = BotTestExpectationsFactory
 
     def _filter_build_type_specifiers(self, specifiers):
         filtered = []
         for specifier in specifiers:
             if specifier.lower() not in TestExpectations.BUILD_TYPES:
                 filtered.append(specifier)
         return filtered
 
     def _collect_expectation_lines(self, builder_names, factory):
-        all_lines = []
-
         models = []
         for builder_name in builder_names:
             model = TestExpectationsModel()
             models.append(model)
 
             expectations = factory.expectations_for_builder(builder_name)
 
             # TODO(ojan): We should also skip bots that haven't uploaded recently,
             # e.g. if they're >24h stale.
             if not expectations:
@@ skipping 25 matching lines @@
         # Skip any tests which are mentioned in the dashboard but not in our checkout:
         fs = tool.filesystem
         lines = filter(lambda line: fs.exists(fs.join(port.layout_tests_dir(), line.path)), lines)
 
         test_names = [line.name for line in lines]
         flakiness_dashboard_url = self.FLAKINESS_DASHBOARD_URL % ','.join(test_names)
         expectations_string = TestExpectations.list_to_string(lines)
 
         # pylint: disable=E1601
         print self.OUTPUT % (self.HEADER, expectations_string, flakiness_dashboard_url)