runtime: skip TestTracebackInlined if inlining is disabled

This should fix the noopt builders.

Change-Id: I49aa374f4d372803599cd2d2a7a29833b379ce1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/475376
Run-TryBot: Austin Clements <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Michael Pratt <[email protected]>
Auto-Submit: Austin Clements <[email protected]>

Author: aclements

src/runtime/traceback_test.go

@@ -19,6 +19,7 @@ import (
 
 // Test traceback printing of inlined frames.
 func TestTracebackInlined(t *testing.T) {
+	testenv.SkipIfOptimizationOff(t) // This test requires inlining
 	check := func(t *testing.T, r *ttiResult, funcs ...string) {
 		t.Helper()