Revert "Added emoji support for identifiers"

This reverts commit 167a5077df.

ablescript/src/lexer.rs

@@ -104,7 +104,7 @@ pub enum Token {
     /// Run at the end of the program
     #[token("finally")]
     Finally,
-
+    
     /// Crash with random error (see discussion #17)
     #[token("rlyeh")]
     Rlyeh,
@@ -126,7 +126,7 @@ pub enum Token {
     Char(char),
 
     /// An identifier
-    #[regex(r"[\p{XID_Start}|\p{Emoji}][\p{XID_Continue}|\p{Emoji}]+", get_ident)]
+    #[regex(r"\p{XID_Start}[\p{XID_Continue}]+", get_ident)]
     #[token("and ", |_| "and".to_owned())]
     Identifier(String),