cmd/coordinator: add a misc-vet-vetall to the trybot set

vet checks for all. josharian rejoices.

Updates golang/go#11041

Change-Id: I1877c0523ba14bbe3a181323aa9ff058797fc4ab
Reviewed-on: https://go-review.googlesource.com/37614
Reviewed-by: Josh Bleecher Snyder <[email protected]>

Author: bradfitz

cmd/coordinator/coordinator.go

@@ -109,6 +109,7 @@ func initTryBuilders() {
 		"nacl-386",
 		"nacl-amd64p32",
 		"linux-arm",
+		"misc-vet-vetall",
 	}
 	for name := range dashboard.Builders {
 		if strings.HasPrefix(name, "misc-compile") {
@@ -400,18 +401,6 @@ func numCurrentBuilds() int {
 	return len(status)
 }
 
-func numCurrentVetAllBuilds() int {
-	statusMu.Lock()
-	defer statusMu.Unlock()
-	n := 0
-	for br := range status {
-		if strings.HasSuffix(br.name, "-vetall") {
-			n++
-		}
-	}
-	return n
-}
-
 func isBuilding(work builderRev) bool {
 	statusMu.Lock()
 	defer statusMu.Unlock()
@@ -431,9 +420,6 @@ func mayBuildRev(rev builderRev) bool {
 	if isBuilding(rev) {
 		return false
 	}
-	if strings.HasSuffix(rev.name, "-vetall") && numCurrentVetAllBuilds() > 0 {
-		return false
-	}
 	if buildEnv.MaxBuilds > 0 && numCurrentBuilds() >= buildEnv.MaxBuilds {
 		return false
 	}