chore(date): remove unnecessary OsString qualifications

Author: mattsu2020

src/uu/date/src/date.rs

@@ -318,7 +318,7 @@ fn parse_military_timezone_with_offset(s: &str) -> Option<(i32, DayDelta)> {
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     let matches = uucore::clap_localization::handle_clap_result(uu_app(), args)?;
 
-    let date_source = if let Some(date_os) = matches.get_one::<std::ffi::OsString>(OPT_DATE) {
+    let date_source = if let Some(date_os) = matches.get_one::<OsString>(OPT_DATE) {
         // Convert OsString to String, handling invalid UTF-8 with GNU-compatible error
         let date = date_os.to_str().ok_or_else(|| {
             let bytes = date_os.as_encoded_bytes();
@@ -650,7 +650,7 @@ pub fn uu_app() -> Command {
                 .value_name("STRING")
                 .allow_hyphen_values(true)
                 .overrides_with(OPT_DATE)
-                .value_parser(clap::value_parser!(std::ffi::OsString))
+                .value_parser(clap::value_parser!(OsString))
                 .help(translate!("date-help-date")),
         )
         .arg(