Update intro1

exercises/00_intro/intro1.rs

@@ -27,13 +27,6 @@ fn main() {
     println!("or logic error. The central concept behind Rustlings is to fix these errors and");
     println!("solve the exercises. Good luck!");
     println!();
-    println!("The source for this exercise is in `exercises/00_intro/intro1.rs`. Have a look!");
-    println!(
-        "Going forward, the source of the exercises will always be in the success/failure output."
-    );
-    println!();
-    println!(
-        "If you want to use rust-analyzer, Rust's LSP implementation, make sure your editor is set"
-    );
-    println!("up, and then run `rustlings lsp` before continuing.")
+    println!("The file of this exercise is `exercises/00_intro/intro1.rs`. Have a look!");
+    println!("The current exercise path is shown under the progress bar in the watch mode.");
 }