Revert "oeqa selftest context.py: fix git commands and set branch name"

We have autobuilder workers which don't have the -b option unfortunately.

This reverts commit 5ec557467dda29309e25102b507bb919275bedbb.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/context.py

@@ -104,7 +104,7 @@ class OESelftestTestContext(OETestContext):
         oe.path.copytree(builddir + "/cache", newbuilddir + "/cache")
         oe.path.copytree(selftestdir, newselftestdir)
 
-        subprocess.check_output("git init -b main && git add * && git commit -a -m 'initial'", cwd=newselftestdir, shell=True)
+        subprocess.check_output("git init; git add *; git commit -a -m 'initial'", cwd=newselftestdir, shell=True)
 
         # Tried to used bitbake-layers add/remove but it requires recipe parsing and hence is too slow
         subprocess.check_output("sed %s/conf/bblayers.conf -i -e 's#%s#%s#g'" % (newbuilddir, selftestdir, newselftestdir), cwd=newbuilddir, shell=True)