DEV: Remove outdated references from Makefile #6110

Job	Run time
Check code style issues	35s
Build & verify package	10s
pytest on 3.8 (crypto-lib: cryptography)	5m 52s
pytest on 3.9 (crypto-lib: cryptography)	5m 29s
pytest on windows	6m 0s
pytest on 3.10 (crypto-lib: cryptography)	5m 41s
pytest on 3.11 (crypto-lib: cryptography)	5m 11s
pytest on 3.12 (crypto-lib: cryptography)	7m 14s
pytest on 3.13 (crypto-lib: cryptography)	6m 38s
pytest on 3.8 (crypto-lib: pycryptodome)	5m 52s
pytest on 3.8 (crypto-lib: none)	5m 44s
Combine & check coverage.	13s
	54m 39s

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