dashboard: update freebsd-arm-paulzhol Note, remove 52679 from KnownIssues

TestPreemptionAfterSyscall and runtime/pprof no longer fail, after the builder was upgraded.
Hardware wise, it's an ARM Cortex A7 -> Cortex A53 (in 32bit mode).
FreeBSD 13.0 -> 13.1 and also switched from the default SCHED_ULE to SCHED_4BSD.

Update golang/go#52679.

Change-Id: Id2be185992c07d74e43e254cd54133b605b1d06e
Reviewed-on: https://go-review.googlesource.com/c/build/+/420354
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/dashboard/builders.go b/dashboard/builders.go
index a775dd0..96183b5 100644
--- a/dashboard/builders.go
+++ b/dashboard/builders.go
@@ -210,7 +210,7 @@
 	"host-freebsd-arm-paulzhol": {
 		IsReverse: true,
 		ExpectNum: 1,
-		Notes:     "Cubiboard2 1Gb RAM dual-core Cortex-A7 (Allwinner A20), FreeBSD 11.1-RELEASE",
+		Notes:     "Raspberry Pi 3 Model B, FreeBSD 13.1-RELEASE with SCHED_4BSD",
 		Owners:    []*gophers.Person{gh("paulzhol")},
 	},
 	"host-freebsd-arm64-dmgk": {
@@ -2870,7 +2870,6 @@
 			"CGO_ENABLED=1",
 			"GO_TEST_TIMEOUT_SCALE=8", // from builder's local environment as of 2022-12-06
 		},
-		KnownIssues: []int{52679},
 	})
 	addBuilder(BuildConfig{
 		Name:     "freebsd-arm64-dmgk",