boards: stm32: Remove lptim node when not used in tree

These boards enable lptim node, but don't propose 'power-states'
description, making it useless and not testable regarding configuration
of existing, in tree, PM tests.

Clean up this definition.

They will be put back along with 'power-states', when possible to test.

(cherry picked from commit a35279488ad9f50faaa512a33c373d516a3cb262)

Original-Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
GitOrigin-RevId: a35279488ad9f50faaa512a33c373d516a3cb262
Change-Id: I8b1c5f60ada4799c6e4d4dafa3001ee921f80db4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/3829399
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
diff --git a/src/third_party/zephyr/main b/src/third_party/zephyr/main
index e69c99f..5ce50c0 160000
--- a/src/third_party/zephyr/main
+++ b/src/third_party/zephyr/main
@@ -1 +1 @@
-Subproject commit e69c99f429b1bc09f664706266fe55eb913976a5
+Subproject commit 5ce50c02a48bcdfe112591d542affb41b73974cf