Remove outdated compatibility code #5951

Job	Run time
redis_version	1s
Dependency audit	16s
Install package from commit hash (3.8)	17s
Code linters	30s
Install package from commit hash (3.9)	13s
Install package from commit hash (3.10)	9s
Install package from commit hash (3.11)	10s
Install package from commit hash (3.12)	7s
Install package from commit hash (3.13)	10s
Install package from commit hash (pypy-3.9)	14s
Install package from commit hash (pypy-3.10)	16s
Redis 8.0-M04-pre; Python 3.8; RESP Parser:plain; EL:asyncio	4m 27s
Redis 8.0-M04-pre; Python 3.13; RESP Parser:plain; EL:asyncio	4m 12s
Redis 7.4.2; Python 3.8; RESP Parser:plain; EL:asyncio	5m 40s
Redis 7.4.2; Python 3.13; RESP Parser:plain; EL:asyncio	5m 19s
Redis 7.2.7; Python 3.8; RESP Parser:plain; EL:asyncio	3m 41s
Redis 7.2.7; Python 3.13; RESP Parser:plain; EL:asyncio	3m 13s
Redis 6.2.17; Python 3.8; RESP Parser:plain; EL:asyncio	3m 14s
Redis 6.2.17; Python 3.13; RESP Parser:plain; EL:asyncio	3m 52s
Validate building and installing the package	0s
Redis ${{ matrix.redis-version }}; Python ${{ matrix.python-version }}; RESP Parser:${{ matrix.parser-backend }} (${{ matrix.hiredis-version }}); EL:${{ matrix.event-loop }}	0s
Redis ${{ matrix.redis-version }}; Python ${{ matrix.python-version }}; RESP Parser:${{ matrix.parser-backend }}; EL:${{ matrix.event-loop }}	0s
Redis ${{ matrix.redis-version }}; Python ${{ matrix.python-version }}; RESP Parser:${{ matrix.parser-backend }}; EL:${{ matrix.event-loop }}	0s
	36m 1s

Provide feedback