Fix use of weight limit errors (#4358)

27 jobs for master in 44 minutes and 42 seconds (queued for 3 seconds)
Name Stage Failure
failed
spellcheck Test
[2021-11-24T12:29:16Z INFO  cargo_spellcheck::action] ✅ /builds/parity/polkadot/node/network/bitfield-distribution/src/lib.rs
[2021-11-24T12:29:16Z INFO cargo_spellcheck::action] ✅ /builds/parity/polkadot/node/network/bitfield-distribution/src/tests.rs
[2021-11-24T12:29:16Z INFO cargo_spellcheck::action] ✅ /builds/parity/polkadot/runtime/common/slot_range_helper/src/lib.rs

real 2m6.707s
user 15m57.095s
sys 6m36.245s
Cleaning up file based variables
ERROR: Job failed: exit code 1