Enable benchmarks on darwin

libgoogle-benchmark works fine on darwin, enable it.

Bug: 77585931
Test: m checkbuild
Change-Id: I8d1cfe4ada634675c8c4c16f42681069d0311771

cc/test.go

@@ -16,7 +16,6 @@ package cc
 
 import (
 	"path/filepath"
-	"runtime"
 	"strings"
 
 	"android/soong/android"
@@ -377,16 +376,6 @@ func (benchmark *benchmarkDecorator) install(ctx ModuleContext, file android.Pat
 }
 
 func NewBenchmark(hod android.HostOrDeviceSupported) *Module {
-	// Benchmarks aren't supported on Darwin
-	if runtime.GOOS == "darwin" {
-		switch hod {
-		case android.HostAndDeviceSupported:
-			hod = android.DeviceSupported
-		case android.HostSupported:
-			hod = android.NeitherHostNorDeviceSupported
-		}
-	}
-
 	module, binary := NewBinary(hod)
 	module.multilib = android.MultilibBoth
 	binary.baseInstaller = NewBaseInstaller("benchmarktest", "benchmarktest64", InstallInData)