script, test: fix python linter E275 errors with flake8 5.0.4

contrib/linearize/linearize-hashes.py

@@ -78,7 +78,7 @@ def get_block_hashes(settings, max_blocks_per_call=10000):
             if rpc.response_is_error(resp_obj):
                 print('JSON-RPC: error at height', height+x, ': ', resp_obj['error'], file=sys.stderr)
                 sys.exit(1)
-            assert(resp_obj['id'] == x) # assume replies are in-sequence
+            assert resp_obj['id'] == x  # assume replies are in-sequence
             if settings['rev_hash_bytes'] == 'true':
                 resp_obj['result'] = bytes.fromhex(resp_obj['result'])[::-1].hex()
             print(resp_obj['result'])

contrib/seeds/generate-seeds.py

@@ -70,13 +70,13 @@ def name_to_bip155(addr):
                 if i == 0 or i == (len(addr)-1): # skip empty component at beginning or end
                     continue
                 x += 1 # :: skips to suffix
-                assert(x < 2)
+                assert x < 2
             else: # two bytes per component
                 val = int(comp, 16)
                 sub[x].append(val >> 8)
                 sub[x].append(val & 0xff)
         nullbytes = 16 - len(sub[0]) - len(sub[1])
-        assert((x == 0 and nullbytes == 0) or (x == 1 and nullbytes > 0))
+        assert (x == 0 and nullbytes == 0) or (x == 1 and nullbytes > 0)
         addr_bytes = bytes(sub[0] + ([0] * nullbytes) + sub[1])
         if addr_bytes[0] == 0xfc:
             # Assume that seeds with fc00::/8 addresses belong to CJDNS,