c_parse_args(): Remove unused `config` variable

Correct this warning:

    warning: unused variable: `config`
       --> src/cocoa_bridge.rs:215:9
        |
    215 |     let config = config::parse_args(&args, config);
        |         ^^^^^^ help: consider using `_config` instead
        |
        = note: #[warn(unused_variables)] on by default

        Finished dev [unoptimized + debuginfo] target(s) in 18.97s

The `config::parse_args()` function will modify the pointer that we
return from here, so we don't need to use its return value.

0 files changed, 0 insertions, 0 deletions