libformat_parser: Fix Rust warnings.

libgrust/ChangeLog:

	* libformat_parser/generic_format_parser/src/lib.rs: Remove
	unused deprecated attribute and unused import.
	* libformat_parser/src/lib.rs: Remove unused import.

libgrust/libformat_parser/generic_format_parser/src/lib.rs

@@ -14,12 +14,10 @@
 // WARNING: We want to be able to build this crate with a stable compiler,
 //          so no `#![feature]` attributes should be added!
 
-#[deprecated(note = "Use a proper lexer function for this")]
 fn is_id_start(c: char) -> bool {
     c == '_' || unicode_xid::UnicodeXID::is_xid_start(c)
 }
 
-#[deprecated(note = "Use a proper lexer function for this")]
 fn is_id_continue(c: char) -> bool {
     unicode_xid::UnicodeXID::is_xid_continue(c)
 }

libgrust/libformat_parser/src/lib.rs

@@ -3,7 +3,7 @@
 // what's the plan? Have a function return something that can be constructed into a vector?
 // or an iterator?
 
-use std::{ffi::CStr, mem};
+use std::ffi::CStr;
 
 trait IntoFFI<T> {
     fn into_ffi(self) -> T;