Remove unnecessary -fembed-bitcode usage now that it's deprecated

This is a partial revert of 6d819a4
because rust-lang/cc-rs#812 removed this flag
entirely, meaning we shouldn't have to pass this manually anymore

Author: keith

src/bootstrap/src/core/build_steps/llvm.rs

@@ -484,7 +484,7 @@ impl Step for Llvm {
             cfg.define("LLVM_VERSION_SUFFIX", suffix);
         }
 
-        configure_cmake(builder, target, &mut cfg, true, ldflags, &[]);
+        configure_cmake(builder, target, &mut cfg, true, ldflags);
         configure_llvm(builder, target, &mut cfg);
 
         for (key, val) in &builder.config.llvm_build_config {
@@ -573,7 +573,6 @@ fn configure_cmake(
     cfg: &mut cmake::Config,
     use_compiler_launcher: bool,
     mut ldflags: LdFlags,
-    extra_compiler_flags: &[&str],
 ) {
     // Do not print installation messages for up-to-date files.
     // LLVM and LLD builds can produce a lot of those and hit CI limits on log size.
@@ -716,9 +715,6 @@ fn configure_cmake(
     if builder.config.llvm_clang_cl.is_some() {
         cflags.push(&format!(" --target={target}"));
     }
-    for flag in extra_compiler_flags {
-        cflags.push(&format!(" {flag}"));
-    }
     cfg.define("CMAKE_C_FLAGS", cflags);
     let mut cxxflags: OsString = builder.cflags(target, GitRepo::Llvm, CLang::Cxx).join(" ").into();
     if let Some(ref s) = builder.config.llvm_cxxflags {
@@ -728,9 +724,6 @@ fn configure_cmake(
     if builder.config.llvm_clang_cl.is_some() {
         cxxflags.push(&format!(" --target={target}"));
     }
-    for flag in extra_compiler_flags {
-        cxxflags.push(&format!(" {flag}"));
-    }
     cfg.define("CMAKE_CXX_FLAGS", cxxflags);
     if let Some(ar) = builder.ar(target) {
         if ar.is_absolute() {
@@ -899,7 +892,7 @@ impl Step for Lld {
             ldflags.push_all("-Wl,-rpath,'$ORIGIN/../../../'");
         }
 
-        configure_cmake(builder, target, &mut cfg, true, ldflags, &[]);
+        configure_cmake(builder, target, &mut cfg, true, ldflags);
         configure_llvm(builder, target, &mut cfg);
 
         // Re-use the same flags as llvm to control the level of debug information
@@ -998,16 +991,7 @@ impl Step for Sanitizers {
         // Unfortunately sccache currently lacks support to build them successfully.
         // Disable compiler launcher on Darwin targets to avoid potential issues.
         let use_compiler_launcher = !self.target.contains("apple-darwin");
-        let extra_compiler_flags: &[&str] =
-            if self.target.contains("apple") { &["-fembed-bitcode=off"] } else { &[] };
-        configure_cmake(
-            builder,
-            self.target,
-            &mut cfg,
-            use_compiler_launcher,
-            LdFlags::default(),
-            extra_compiler_flags,
-        );
+        configure_cmake(builder, self.target, &mut cfg, use_compiler_launcher, LdFlags::default());
 
         t!(fs::create_dir_all(&out_dir));
         cfg.out_dir(out_dir);