runtime: remove unnecessary writes to gp.sched.g on loong64
Same as CL 292109, A g's sched.g is set in newproc1, After that, it never changes.
Yet lots of assembly code does "g.sched.g = g" unnecessarily. Remove it to avoid
confusion about whether it ever changes.
Change-Id: I3d3b18267a80bdd9ef5487c1d1d29de4c5a2d5cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/476375 Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Wayne Zuo <wdvxdr@golangcn.org> Reviewed-by: WANG Xuerui <git@xen0n.name>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>