Remove #![feature(result_option_inspect)] from the compiler

Author: slanterns

compiler/rustc_errors/src/lib.rs

@@ -10,7 +10,6 @@
 #![feature(if_let_guard)]
 #![feature(let_chains)]
 #![feature(never_type)]
-#![feature(result_option_inspect)]
 #![feature(rustc_attrs)]
 #![feature(yeet_expr)]
 #![feature(try_blocks)]

compiler/rustc_middle/src/lib.rs

@@ -58,7 +58,6 @@
 #![feature(extract_if)]
 #![feature(intra_doc_pointers)]
 #![feature(yeet_expr)]
-#![feature(result_option_inspect)]
 #![feature(const_option)]
 #![feature(trait_alias)]
 #![feature(ptr_alignment_type)]

compiler/rustc_trait_selection/src/lib.rs

@@ -21,7 +21,6 @@
 #![feature(let_chains)]
 #![feature(if_let_guard)]
 #![feature(never_type)]
-#![feature(result_option_inspect)]
 #![feature(type_alias_impl_trait)]
 #![feature(min_specialization)]
 #![recursion_limit = "512"] // For rustdoc