Simplify and make it not break on linux (#7813)

Co-authored-by: Douwe Osinga <douwe@squareup.com>

crates/goose-cli/src/session/input.rs

@@ -400,12 +400,7 @@ fn parse_plan_command(input: String) -> Option<InputResult> {
 }
 
 fn get_input_prompt_string() -> String {
-    let goose = "🪿";
-    if cfg!(target_os = "windows") {
-        format!("{goose} ")
-    } else {
-        format!("{} ", console::style(goose))
-    }
+    "🪿 ".to_string()
 }
 
 fn print_help() {
@@ -692,20 +687,4 @@ mod tests {
         let result = handle_slash_command("/recipe /path/to/file.txt");
         assert!(matches!(result, Some(InputResult::Retry)));
     }
-
-    #[test]
-    fn test_get_input_prompt_string() {
-        let prompt = get_input_prompt_string();
-
-        // Prompt should always end with a space
-        assert!(prompt.ends_with(' '));
-
-        // Prompt should contain the goose emoji
-        assert!(prompt.contains("🪿"));
-
-        #[cfg(target_os = "windows")]
-        {
-            assert_eq!(prompt, "🪿 ");
-        }
-    }
 }