Revert "testing: add TB.SetGOMAXPROCS function"

This reverts CL 519235.

Reason for revert: Proposal is still in incoming.

For #62020

Change-Id: Icccb930209f36097f5d930c01eda6b5042bdddc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/573516
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

1 files changed, 0 insertions, 97 deletions

diff --git a/src/testing/testing_test.go b/src/testing/testing_test.go
index 28b5809eea..d3822dfd57 100644
--- a/src/testing/testing_test.go
+++ b/src/testing/testing_test.go
@@ -13,7 +13,6 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
-	"runtime"
 	"slices"
 	"strings"
 	"sync"
@@ -259,102 +258,6 @@ func TestSetenvWithParallelGrandParentBeforeSetenv(t *testing.T) {
 	})
 }
 
-func TestSetGOMAXPROCS(t *testing.T) {
-	if runtime.GOARCH == "wasm" {
-		t.Skip("not supported on wasm yet")
-	}
-	tests := []struct {
-		name string
-		newP int
-	}{
-		{
-			name: "overriding value",
-			newP: 1,
-		},
-	}
-
-	for _, test := range tests {
-		p := runtime.GOMAXPROCS(0)
-		t.Run(test.name, func(t *testing.T) {
-			t.SetGOMAXPROCS(test.newP + 1)
-			if runtime.GOMAXPROCS(0) != test.newP+1 {
-				t.Fatalf("unexpected value after t.SetGOMAXPROCS: got %d, want %d", runtime.GOMAXPROCS(0), test.newP+1)
-			}
-		})
-		if runtime.GOMAXPROCS(0) != p {
-			t.Fatalf("unexpected value after t.SetGOMAXPROCS cleanup: got %d, want %d", runtime.GOMAXPROCS(0), p)
-		}
-	}
-}
-
-func TestSetGOMAXPROCSWithParallelAfterSetGOMAXPROCS(t *testing.T) {
-	if runtime.GOARCH == "wasm" {
-		t.Skip("not supported on wasm yet")
-	}
-	defer func() {
-		want := "testing: t.Parallel called after t.SetGOMAXPROCS; cannot set GOMAXPROCS in parallel tests"
-		if got := recover(); got != want {
-			t.Fatalf("expected panic; got %#v want %q", got, want)
-		}
-	}()
-	p := runtime.GOMAXPROCS(0)
-	t.SetGOMAXPROCS(p + 1)
-	t.Parallel()
-}
-
-func TestSetGOMAXPROCSWithParallelBeforeSetGOMAXPROCS(t *testing.T) {
-	if runtime.GOARCH == "wasm" {
-		t.Skip("not supported on wasm yet")
-	}
-	defer func() {
-		want := "testing: t.SetGOMAXPROCS called after t.Parallel; cannot set GOMAXPROCS in parallel tests"
-		if got := recover(); got != want {
-			t.Fatalf("expected panic; got %#v want %q", got, want)
-		}
-	}()
-	t.Parallel()
-	p := runtime.GOMAXPROCS(0)
-	t.SetGOMAXPROCS(p + 1)
-}
-
-func TestSetGOMAXPROCSWithParallelParentBeforeSetGOMAXPROCS(t *testing.T) {
-	if runtime.GOARCH == "wasm" {
-		t.Skip("not supported on wasm yet")
-	}
-	t.Parallel()
-	t.Run("child", func(t *testing.T) {
-		defer func() {
-			want := "testing: t.SetGOMAXPROCS called after t.Parallel; cannot set GOMAXPROCS in parallel tests"
-			if got := recover(); got != want {
-				t.Fatalf("expected panic; got %#v want %q", got, want)
-			}
-		}()
-
-		p := runtime.GOMAXPROCS(0)
-		t.SetGOMAXPROCS(p + 1)
-	})
-}
-
-func TestSetGOMAXPROCSWithParallelGrandParentBeforeSetGOMAXPROCS(t *testing.T) {
-	if runtime.GOARCH == "wasm" {
-		t.Skip("not supported on wasm yet")
-	}
-	t.Parallel()
-	t.Run("child", func(t *testing.T) {
-		t.Run("grand-child", func(t *testing.T) {
-			defer func() {
-				want := "testing: t.SetGOMAXPROCS called after t.Parallel; cannot set GOMAXPROCS in parallel tests"
-				if got := recover(); got != want {
-					t.Fatalf("expected panic; got %#v want %q", got, want)
-				}
-			}()
-
-			p := runtime.GOMAXPROCS(0)
-			t.SetGOMAXPROCS(p + 1)
-		})
-	})
-}
-
 // testingTrueInInit is part of TestTesting.
 var testingTrueInInit = false