Merge ref '3507a749b365' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: 3507a749b365aae4eefa96ab700a9315d3280ee7
Filtered ref: 67f9124a1e199effc310447c1c1f9548093bd8f9

This merge was created using https://github.com/rust-lang/josh-sync.

Author: The Miri Cronjob Bot

crates/core_arch/src/lib.rs

@@ -18,8 +18,6 @@
     rustc_attrs,
     staged_api,
     doc_cfg,
-    tbm_target_feature,
-    sse4a_target_feature,
     riscv_target_feature,
     arm_target_feature,
     mips_target_feature,