Fix redundant backslash

[thopre]

Summary

Fix Flake8's E502 errors (backslash is redundant between backets.

lnt/server/ui/app.py

def start_file_logging(self, log_file_name):
                     LOG_FILENAME, maxBytes=1048576, backupCount=5)
                 rotating.setFormatter(Formatter(
                     '%(asctime)s %(levelname)s: %(message)s '
                     '[in %(filename)s:%(lineno)d]'
                 ))
                 rotating.setLevel(logging.DEBUG)
                 self.logger.addHandler(rotating)
             except (OSError, IOError) as e:
-                print("Error making log file", \
+                print("Error making log file",
                       LOG_FILENAME, str(e), file=sys.stderr)
                 print("Will not log to file.", file=sys.stderr)
             else:
                 self.logger.info("Started file logging.")
                 print("Logging to :", LOG_FILENAME)
         else:
             self.config['log_file_name'] = log_file_name
 

lnt/tests/nt.py

if config.build_threads > 0:
                                    ' '.join('"%s"' % a
                                             for a in args)), file=test_log)
         test_log.flush()
 
         print('%s: building "nightly tests" with -j%u...' % (
             timestamp(), config.build_threads), file=sys.stderr)
         res = execute_command(test_log, basedir, args, report_dir)
         if res != 0:
-            print("Failure while running make build! " \
+            print("Failure while running make build! "
                   "See log: %s" % test_log.name, file=sys.stderr)
 
     # Then 'make report'.
     args = common_args + ['-j', str(config.threads),
                           'report', 'report.%s.csv' % config.test_style]
     print('%s: running: %s' % (timestamp(),
                                ' '.join('"%s"' % a
                                         for a in args)), file=test_log)
     test_log.flush()
 
     # FIXME: We shouldn't need to set env=os.environ here, but if we don't
     # somehow MACOSX_DEPLOYMENT_TARGET gets injected into the environment on OS
     # X (which changes the driver behavior and causes generally weirdness).
     print('%s: executing "nightly tests" with -j%u...' % (
         timestamp(), config.threads), file=sys.stderr)
 
     res = execute_command(test_log, basedir, args, report_dir)
 
     if res != 0:
-        print("Failure while running nightly tests!  "\
+        print("Failure while running nightly tests!  "
               "See log: %s" % test_log.name, file=sys.stderr)
 
 
 # Keep a mapping of mangled test names, to the original names in the
 # test-suite.
 TEST_TO_NAME = {}
 KNOWN_SAMPLE_KEYS = ('compile', 'exec', 'hash',
                      'gcc.compile', 'bc.compile', 'llc.compile',
def run_test(self, opts):
 
         # Multisample, if requested.
         merge_run = None
         if opts.multisample is not None:
             # Collect the sample reports.
             reports = []
 
             for i in range(opts.multisample):
-                print("%s: (multisample) running iteration %d" %\
+                print("%s: (multisample) running iteration %d" %
                       (timestamp(), i), file=sys.stderr)
                 report = run_test(opts.label, i, config)
                 reports.append(report)
 
             # Create the merged report.
             #
             # FIXME: Do a more robust job of merging the reports?
             print("%s: (multisample) creating merged report" % (