Delete test_date_military_timezone_j test

Remove test for military timezone 'J' input.

Author: sylvestre

tests/by-util/test_date.rs

@@ -833,19 +833,6 @@ fn test_date_numeric_d_invalid_numbers() {
         .stderr_contains("invalid date");
 }
 
-#[test]
-fn test_date_military_timezone_j() {
-    // J is reserved for local time in military timezones
-    // GNU date treats it as midnight today (00:00:00)
-    new_ucmd!()
-        .env("TZ", "UTC+1")
-        .arg("-d")
-        .arg("J")
-        .arg("+%F %T %Z")
-        .succeeds()
-        .stdout_contains("00:00:00");
-}
-
 #[test]
 fn test_date_military_timezone_j_variations() {
     // Test multiple variations of 'J' input (case insensitive, with whitespace)