Rollup merge of rust-lang#42120 - euclio:unicode, r=arielb1

remove "much" from unicode diagnostic

The English seems slightly awkward to me, and it's unnecessary.

src/libsyntax/parse/lexer/unicode_chars.rs

@@ -238,7 +238,7 @@ pub fn check_for_substitution<'a>(reader: &StringReader<'a>,
         match ASCII_ARRAY.iter().find(|&&(c, _)| c == ascii_char) {
             Some(&(ascii_char, ascii_name)) => {
                 let msg =
-                    format!("unicode character '{}' ({}) looks much like '{}' ({}), but it's not",
+                    format!("unicode character '{}' ({}) looks like '{}' ({}), but it's not",
                             ch, u_name, ascii_char, ascii_name);
                 err.span_help(span, &msg);
             },

src/test/parse-fail/unicode-chars.rs

@@ -9,10 +9,9 @@
 // except according to those terms.
 
 // compile-flags: -Z parse-only
-// ignore-tidy-linelength
 
 fn main() {
     let y = 0;
     //~^ ERROR unknown start of token: \u{37e}
-    //~^^ HELP unicode character ';' (Greek Question Mark) looks much like ';' (Semicolon), but it's not
+    //~^^ HELP unicode character ';' (Greek Question Mark) looks like ';' (Semicolon), but it's not
 }