Remove profiler output and replace with a raw event dump

Related to #58372

Author: wesleywiser

src/librustc/session/config.rs

@@ -1405,9 +1405,7 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
     crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
         "inject the given attribute in the crate"),
     self_profile: bool = (false, parse_bool, [UNTRACKED],
-        "run the self profiler"),
-    profile_json: bool = (false, parse_bool, [UNTRACKED],
-        "output a json file with profiler results"),
+        "run the self profiler and output the raw event data"),
     emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
         "emits a section containing stack size metadata"),
     plt: Option<bool> = (None, parse_opt_bool, [TRACKED],

src/librustc/session/mod.rs

@@ -1130,11 +1130,8 @@ pub fn build_session_(
     source_map: Lrc<source_map::SourceMap>,
     driver_lint_caps: FxHashMap<lint::LintId, lint::Level>,
 ) -> Session {
-    let self_profiling_active = sopts.debugging_opts.self_profile ||
-                                sopts.debugging_opts.profile_json;
-
     let self_profiler =
-        if self_profiling_active { Some(Arc::new(PlMutex::new(SelfProfiler::new()))) }
+        if sopts.debugging_opts.self_profile { Some(Arc::new(PlMutex::new(SelfProfiler::new()))) }
         else { None };
 
     let host_triple = TargetTriple::from_triple(config::host_triple());