*: remove checks for TRAVIS env variable (#3568)

We had a few checks left over for the TRAVIS variable that detected if
we were running under the TravisCI build system.
This variable hasn't been set since 2020.

_scripts/make.go

@@ -130,7 +130,7 @@ This option can only be specified if testset is basic or a single package.`)
 
 func checkCert() bool {
 	// If we're on OSX make sure the proper CERT env var is set.
-	if os.Getenv("TRAVIS") == "true" || runtime.GOOS != "darwin" || os.Getenv("CERT") != "" {
+	if runtime.GOOS != "darwin" || os.Getenv("CERT") != "" {
 		return true
 	}
 
@@ -328,9 +328,6 @@ func testFlags() []string {
 	}
 	if NOTimeout {
 		testFlags = append(testFlags, "-timeout", "0")
-	} else if os.Getenv("TRAVIS") == "true" {
-		// Make test timeout shorter than Travis' own timeout so that Go can report which test hangs.
-		testFlags = append(testFlags, "-timeout", "9m")
 	}
 	if len(os.Getenv("TEAMCITY_VERSION")) > 0 {
 		testFlags = append(testFlags, "-json")
@@ -344,20 +341,6 @@ func testFlags() []string {
 func testCmd(cmd *cobra.Command, args []string) {
 	checkCertCmd(nil, nil)
 
-	if os.Getenv("TRAVIS") == "true" && runtime.GOOS == "darwin" {
-		fmt.Println("Building with native backend")
-		execute("go", "build", "-tags=macnative", buildFlags(), DelveMainPackagePath)
-
-		fmt.Println("\nBuilding without native backend")
-		execute("go", "build", buildFlags(), DelveMainPackagePath)
-
-		fmt.Println("\nTesting")
-		os.Setenv("PROCTEST", "lldb")
-		env := []string{}
-		executeq(env, "sudo", "-E", "go", "test", testFlags(), allPackages())
-		return
-	}
-
 	if TestSet == "" && TestBackend == "" && TestBuildMode == "" {
 		if TestRegex != "" {
 			fmt.Printf("Can not use --test-run without --test-set\n")

cmd/dlv/dlv_test.go

@@ -366,9 +366,6 @@ func diffMaybe(t *testing.T, filename string, generated []byte) {
 // TestGeneratedDoc tests that the autogenerated documentation has been
 // updated.
 func TestGeneratedDoc(t *testing.T) {
-	if strings.ToLower(os.Getenv("TRAVIS")) == "true" && runtime.GOOS == "windows" {
-		t.Skip("skipping test on Windows in CI")
-	}
 	if runtime.GOOS == "windows" && runtime.GOARCH == "arm64" {
 		//TODO(qmuntal): investigate further when the Windows ARM64 backend is more stable.
 		t.Skip("skipping test on Windows in CI")

pkg/proc/proc_test.go

@@ -3054,11 +3054,6 @@ func TestIssue877(t *testing.T) {
 	if runtime.GOOS != "darwin" && testBackend == "lldb" {
 		return
 	}
-	if os.Getenv("TRAVIS") == "true" && runtime.GOOS == "darwin" {
-		// Something changed on Travis side that makes the Go compiler fail if
-		// DYLD_LIBRARY_PATH is set.
-		t.Skip("broken")
-	}
 	const envval = "/usr/local/lib"
 	t.Setenv("DYLD_LIBRARY_PATH", envval)
 	withTestProcess("issue877", t, func(p *proc.Target, grp *proc.TargetGroup, fixture protest.Fixture) {

pkg/proc/test/support.go

@@ -307,9 +307,6 @@ func MustSupportFunctionCalls(t *testing.T, testBackend string) {
 		t.Skip("this backend does not support function calls")
 	}
 
-	if runtime.GOOS == "darwin" && os.Getenv("TRAVIS") == "true" && runtime.GOARCH == "amd64" {
-		t.Skip("function call injection tests are failing on macOS on Travis-CI (see #1802)")
-	}
 	if runtime.GOARCH == "386" {
 		t.Skip(fmt.Errorf("%s does not support FunctionCall for now", runtime.GOARCH))
 	}