own-mirrors.bbclass: Clean up the additions to PREMIRRORS
* Since commit
ce0579dc in bitbake (fetch2: Revert the regexp removal
for the type field and instead anchor regexp) the type regexp has
been automatically anchored at the end.
* Since commit
044fb04d in bitbake (fetch2: Allow whitespace only mirror
entries) there is no need to separate the entries in PREMIRRORS with
"\n".
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>