CI, pytest: Add a test for sandbox without LTO

The primary motivation for having a sandbox without LTO build in CI is
to ensure that we don't have that option break. We now have the ability
to run tests of specific options being enabled/disabled, so drop the
parts of CI that build and test that configuration specifically and add
a build test instead. We still test that "NO_LTO=1" rather than editing
the config file works via the ftrace tests.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>

.azure-pipelines.yml

@@ -287,9 +287,6 @@ stages:
         sandbox64_clang:
           TEST_PY_BD: "sandbox64"
           OVERRIDE: "-O clang-16"
-        sandbox_nolto:
-          TEST_PY_BD: "sandbox"
-          BUILD_ENV: "NO_LTO=1"
         sandbox_spl:
           TEST_PY_BD: "sandbox_spl"
           TEST_PY_TEST_SPEC: "test_ofplatdata or test_handoff or test_spl"