internal/lsp/regtest: remove stray short timeout

Apparently 5 seconds is too short for the freebsd-race builder and we
care about that.

Fixes golang/go#40090.

Change-Id: I6dad57402ed18e7c9e01f695ada7cc8b0cf35fb4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/241521
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>

internal/lsp/regtest/imports_test.go

@@ -6,7 +6,6 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
-	"time"
 
 	"golang.org/x/tools/internal/lsp/fake"
 	"golang.org/x/tools/internal/testenv"
@@ -152,5 +151,5 @@ var _, _ = x.X, y.Y
 		if !strings.HasPrefix(path, filepath.ToSlash(modcache)) {
 			t.Errorf("found module dependency outside of GOMODCACHE: got %v, wanted subdir of %v", path, filepath.ToSlash(modcache))
 		}
-	}, WithProxy(proxy), WithEditorConfig(fake.EditorConfig{Env: []string{"GOMODCACHE=" + modcache}}), WithTimeout(5*time.Second))
+	}, WithProxy(proxy), WithEditorConfig(fake.EditorConfig{Env: []string{"GOMODCACHE=" + modcache}}))
 }