runtime: use cgo_import_dynamic for QueryPerformanceCounter

runtime: use cgo_import_dynamic for QueryPerformanceCounter

QueryPerformanceCounter is available since Windows 2000 [1], so there
is no need to conditionally load it.

Even if the Go runtime doesn't eventually use it, it is still simpler
and faster to just tell the Windows loader to load it, instead of doing
it ourselves.

[1]: https://learn.microsoft.com/en-us/windows/win32/api/profileapi/nf-profileapi-queryperformancecounter

Change-Id: Ied3b54a6a8fe3b8d51aefab0fe483b3a193b5522
Reviewed-on: https://go-review.googlesource.com/c/go/+/532915
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>