'conflicts_with "telepresence"' should be removed from telepresence-oss.rb

[matt-chapman]

Hi, when upgrading telepresence-oss via homebrew, I receive the following warning message:

==> Upgrading telepresenceio/telepresence/telepresence-oss
  2.20.1 -> 2.21.1
Warning: telepresence-oss: No available formula with the name "telepresence". Did you mean telepresence-oss?
'conflicts_with "telepresence"' should be removed from telepresence-oss.rb.
Please report this issue to the telepresenceio/homebrew-telepresence tap
 (not Homebrew/brew or Homebrew/homebrew-core)!
🍺  /opt/homebrew/Cellar/telepresence-oss/2.21.1: 4 files, 125.6MB, built in 1 second

I'm reporting it as the warning requests :)