Remove comment out code

This commit removes comment out codes to keep code clean.

Change-Id: Ib280b0d039e1a47459d68f0f4d2096418a2ea5ef

coverage2sql/db/api.py

@@ -35,7 +35,6 @@ engine = None
 def setup():
     global engine
     db_uri = make_url(CONF.database.connection)
-    # db_backend = db_uri.get_backend_name()
 
     pool_size = CONF.database.max_pool_size
     pool_recycle = CONF.database.idle_timeout

coverage2sql/shell.py

@@ -76,7 +76,6 @@ def main():
         coverage_rate = cov.get_coverage_rate()
     else:
         raise NotImplementedError()
-        # cov = coverage.ReadCoverage(sys.stdin)
     process_results(project_name, coverage_rate)