efi_loader: remove ERROR:, WARNING: prefixes in messages

We should not write "ERROR:" or "WARNING:" when using log_err() or
log_warning(). These prefixed don't provide additional information.

Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
1 file changed