Address lint checks.

Author: sergeisakov

lib/BUILD

@@ -547,8 +547,8 @@ cc_library(
         ":circuit",
         ":gate",
         ":gate_appl",
-        ":util",
         ":operation_base",
+        ":util",
     ],
 )
 

qsimcirq/qsim_circuit.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Dict, List, Sequence, Tuple, Union
+from typing import Dict, List, Sequence, Tuple
 
 import cirq
 import numpy as np