Bug#910105: llvm-toolchain-5.0: stay out of testing

[Emilio Pozuelo Monfort]

Source: llvm-toolchain-5.0
Severity: serious

Hi,

llvm-toolchain-5.0 is not in testing. Let's keep it that way.
We should ship buster with llvm 6.0 and 7.

Cheers,
Emilio