Remove custom clone command from CirrusCI setup
Remove custom clone command from CirrusCI setup

At some point in the past when I first tested building lib/llvm
on Cirrus, it required doing a recursive pull of the LLVM submodule.

I wasn't sure why but it was an easy fix. Whatever caused problems in
the past is no longer an issue so we can remove the custom clone
commands.

sgebbie/ponyc,kulibali/ponyc,kulibali/ponyc,sgebbie/ponyc,dipinhora/ponyc,cquinn/ponyc,ponylang/ponyc,jemc/ponyc,cquinn/ponyc,cquinn/ponyc,sgebbie/ponyc,jemc/ponyc,dipinhora/ponyc,sgebbie/ponyc,cquinn/ponyc,ponylang/ponyc,dipinhora/ponyc,ponylang/ponyc,sgebbie/ponyc,kulibali/ponyc,jemc/ponyc,kulibali/ponyc