Rollup merge of rust-lang#148904 - WaffleLapkin:uncodegenssasitself, r=WaffleLapkin

waffle: stop watching codegen ssa

There is a surprising amount of PRs being open to codegen ssa, notification spam makes me stressed. I don't think knowing everything being changed in cg_ssa is useful for me, as most changes are irrelevant to me.

Author: Zalathar

triagebot.toml

@@ -922,9 +922,6 @@ cc = ["@davidtwco", "@wesleywiser"]
 [mentions."compiler/rustc_codegen_cranelift"]
 cc = ["@bjorn3"]
 
-[mentions."compiler/rustc_codegen_ssa"]
-cc = ["@WaffleLapkin"]
-
 [mentions."compiler/rustc_codegen_gcc"]
 cc = ["@antoyo", "@GuillaumeGomez"]