internal/task: remove -compat=1.19 since minimum version is 1.26

Change-Id: I2d80fbaaf04f1641177c4c2a12cea8843042b6eb
Reviewed-on: https://go-review.googlesource.com/c/build/+/791460
Auto-Submit: Hongxiang Jiang <hxjiang@golang.org>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

internal/task/releasegopls.go

diff --git a/internal/task/releasegopls.go b/internal/task/releasegopls.go
index dbf2d69..f6ddc97 100644
--- a/internal/task/releasegopls.go
+++ b/internal/task/releasegopls.go
@@ -375,12 +375,10 @@
 	if err != nil {
 		return "", err
 	}
-	// TODO(hxjiang): Remove -compat flag once gopls no longer supports building
-	// with older Go versions.
 	script := fmt.Sprintf(`cd gopls
 go mod edit -dropreplace=golang.org/x/tools
 go get golang.org/x/tools@%s
-go mod tidy -compat=1.19
+go mod tidy
 `, head)
 
 	changedFiles, err := executeAndMonitorChange(ctx, r.CloudBuild, "tools", branch, script, []string{"gopls/go.mod", "gopls/go.sum"})
@@ -863,12 +861,10 @@
 		return openCL, nil
 	}
 
-	// TODO(hxjiang): Remove -compat flag once gopls no longer supports building
-	// with older Go versions.
 	const script = `cd gopls
 pwd
 go get -u all
-go mod tidy -compat=1.19
+go mod tidy
 go generate ./internal/licenses
 `
 	changed, err := executeAndMonitorChange(ctx, r.CloudBuild, "tools", "master", script, []string{"gopls/go.mod", "gopls/go.sum", "gopls/internal/licenses/licenses.go"})