gpg: When using a parm file w/o usage don't set the RENC usage.
* g10/keygen.c (proc_parameter_file): Don't include RENC in the default usage.
Testplan:
$ gpg --gen-key --batch <<EOF Key-Type: EDDSA Key-Curve: ed448 Key-Usage: cert Name-Real: Meh Muh Name-Email: test-3@example.org Expire-Date: 2025-01-01 Passphrase: abc subkey-type: ecdh Subkey-curve: cv448 EOF
and check that the R flag does not show up in the usage.