Mike McQuaid dc1fdc9f8d
Speedup brew --version.
Port `brew --version` to Bash to speed it up.

While we're here:
- remove (now) unused `Tap` Git methods
- use `--quiet` instead of `-q` to be more verbose

Benchmarks:
```
$ hyperfine --min-runs=3 --warmup=2 "git checkout origin/master; brew --version" "git checkout speedup_brew_version; brew --version"
Benchmark #1: git checkout origin/master; brew --version
  Time (mean ± σ):      2.083 s ±  0.004 s    [User: 396.8 ms, System: 597.2 ms]
  Range (min … max):    2.080 s …  2.088 s    3 runs

Benchmark #2: git checkout speedup_brew_version; brew --version
  Time (mean ± σ):     847.9 ms ±  35.2 ms    [User: 100.0 ms, System: 247.9 ms]
  Range (min … max):   824.1 ms … 888.3 ms    3 runs

Summary
  'git checkout speedup_brew_version; brew --version' ran
    2.46 ± 0.10 times faster than 'git checkout origin/master; brew --version'
```
2021-03-04 12:59:42 +00:00
..
2019-12-17 21:42:53 +00:00
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2019-01-08 19:13:46 +00:00
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