Temorarily remove Vulkan NexusPlayer bots till we can fix them

BUG=skia:

Change-Id: Iba79f4ade1ed653098eb81f30b02d02aa542028d
Reviewed-on: https://skia-review.googlesource.com/6240
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
tree: 2399b8333bb06dc4c5450126f7dc9e041adcec31
  1. recipe_modules/
  2. recipes.py
  3. recipes/