Remove Start* macros from postmaster.c to ease understanding of code

When Who What
2024-02-07 18:51:38 Nathan Bossart (bossartn) Closed in commitfest 2024-03 with status: Committed
2024-02-06 20:37:36 Nathan Bossart (bossartn) New status: Ready for Committer
2024-02-06 20:37:34 Nathan Bossart (bossartn) Added bossartn as committer
2024-02-06 18:20:30 Nathan Bossart (bossartn) Added bossartn as reviewer
2024-02-06 17:28:42 Reid Thompson (jreidthompsoncd) Changed authors to Reid Thompson (jreidthompsoncd)
2024-02-06 17:27:56 Reid Thompson (jreidthompsoncd) Attached mail thread e88934c02a5c66f5e8caab2025f85da6b9026d0b.camel@crunchydata.com
2024-02-06 17:27:56 Reid Thompson (jreidthompsoncd) Created patch record