chore: add redundant_lifetimes rustc style/readability lint (#924)

Author: RRRadicalEdward

Cargo.toml

@@ -67,6 +67,7 @@ keyword_idents = "warn"
 noop_method_call = "warn"
 macro_use_extern_crate = "warn"
 redundant_imports = "warn"
+redundant_lifetimes = "warn"
 # missing_docs = "warn" # TODO: NOTE(@CBenoit): we probably want to ensure this in core tier crates only
 
 # == Compile-time / optimization == #