Remove fileutils.Tempdir/file from push command
Remove fileutils.Tempdir/file from push command

Also remove unnecessary private methods.

fujitsu-cf/cli,mcintyred/cli,hyenaspots/cli,markstgodard/cli,markstgodard/cli,mcintyred/cli,markstgodard/cli,simonleung8/cli,hyenaspots/cli,cf-routing/cli,hyenaspots/cli,hyenaspots/cli,fujitsu-cf/cli,mcintyred/cli,cf-routing/cli,markstgodard/cli,mcintyred/cli,simonleung8/cli,cf-routing/cli,cf-routing/cli,simonleung8/cli,fujitsu-cf/cli