runtime: rename fastrand1 to fastrand

Change-Id: I37706ff0a3486827c5b072c95ad890ea87ede847
Reviewed-on: https://go-review.googlesource.com/28210
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/src/runtime/os_netbsd_arm.go b/src/runtime/os_netbsd_arm.go
index 03032e8..95603da 100644
--- a/src/runtime/os_netbsd_arm.go
+++ b/src/runtime/os_netbsd_arm.go
@@ -28,8 +28,8 @@
 
 //go:nosplit
 func cputicks() int64 {
-	// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand1().
+	// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand().
 	// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
-	// TODO: need more entropy to better seed fastrand1.
+	// TODO: need more entropy to better seed fastrand.
 	return nanotime()
 }