Directly import json from the standard library. (#8259)

By importing from canonicaljson the simplejson module was still being used
in some situations. After this change the std lib json is consistenty used
throughout Synapse.

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py

index 2a2c9e6f13..bb33345be6 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -15,10 +15,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import json
 from typing import List
 
 import jsonschema
-from canonicaljson import json
 from jsonschema import FormatChecker
 
 from synapse.api.constants import EventContentFields