Clean up cursor offset workaround comment

Remove comment about fig_os_shim dependency in cursor offset workaround.

Author: dk19y

crates/alacritty_terminal/src/term/mod.rs

@@ -834,7 +834,6 @@ impl<T> Term<T> {
 
         // Add work around for emojis
         if let Ok(cursor_offset) = std::env::var("Q_PROMPT_OFFSET_WORKAROUND") {
-            // ALLOWED: alacritty_terminal doesn't have fig_os_shim dependency
             if let Ok(offset) = cursor_offset.parse::<i32>() {
                 self.shell_state.cmd_cursor = self.shell_state.cmd_cursor.map(|cursor| Point {
                     column: Column((cursor.column.0 as i32 - offset).max(0) as usize),