Use the default multiprocessing pool configuration. #3199

Job	Run time
Check GitHub Organization	1s
./dtox.sh -e py27-pip20	1m 43s
tox -e format-check,lint-check,typecheck,enum-check,vendor-check,package,docs	1m 42s
./dtox.sh -e py38-pip22_3_1	1m 42s
tox -e py313-pip24_3_1	1m 43s
./dtox.sh -e py311-pip23_3_2	1m 43s
tox -e py313-pip24_3_1-integration --shard 1/2	1m 45s
./dtox.sh -e py313-pip24_3_1	1m 41s
tox -e py313-pip24_3_1-integration --shard 2/2	1m 50s
./dtox.sh -e py314-pip24_3_1	1m 41s
./dtox.sh -e pypy310-pip24_3_1	1m 41s
./dtox.sh -e py27-pip20-integration	1m 43s
./dtox.sh -e py38-pip22_3_1-integration --shard 1/2	1m 40s
./dtox.sh -e py38-pip22_3_1-integration --shard 2/2	1m 41s
./dtox.sh -e py311-pip23_3_2-integration --shard 1/2	1m 42s
./dtox.sh -e py311-pip23_3_2-integration --shard 2/2	1m 43s
./dtox.sh -e py313-pip24_3_1-integration --shard 1/2	1m 42s
./dtox.sh -e py313-pip24_3_1-integration --shard 2/2	1m 41s
./dtox.sh -e py314-pip24_3_1-integration --shard 1/2	1m 41s
./dtox.sh -e py314-pip24_3_1-integration --shard 2/2	1m 42s
./dtox.sh -e pypy310-pip24_3_1-integration --shard 1/2	1s
./dtox.sh -e pypy310-pip24_3_1-integration --shard 2/2	1m 41s
Gather Final Status	1s
	34m 10s

Provide feedback