Drop xcpretty

This makes it much harder to figure out what actually
caused a failure on CI.

Bug: https://github.com/flutter/flutter/issues/63781
Change-Id: I37753498e35fa0d2d7f29bab42de58a51c7773d3
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/5660
Reviewed-by: Xiao Yu <xster@google.com>
Commit-Queue: Dan Field <dnfield@google.com>
18 files changed
tree: 99f15a19d394eafa4227069edad94e32fe2e89b6
  1. infra/
  2. recipe_modules/
  3. recipes/
  4. .gitignore
  5. .style.yapf
  6. OWNERS
  7. recipes.py