docs(protobuf): trim proto regeneration comment

Author: arduano

roborock/map/proto/b01_scmap.proto

@@ -1,8 +1,6 @@
 // Checked-in B01/Q7 SCMap schema for the generated runtime protobuf module.
 // Regenerate the checked-in Python module after edits with:
 //   python -m grpc_tools.protoc -I./roborock/map/proto --python_out=./roborock/map/proto roborock/map/proto/b01_scmap.proto
-// Keep protoc/python-protobuf on major version 6 when generating this file so
-// the checked-in gencode stays compatible with the runtime dependency range.
 // The generated file `b01_scmap_pb2.py` is checked in for runtime use and should
 // not be edited by hand.
 syntax = "proto2";