stm32cube: stm32h7rs: SMPS is de facto supported

All SoCs of this series support SMPS, so defining this symbol, as it
is done on stm32h7 series is not required.

(cherry picked from commit c17bcab857dbf2ec3100b2d0c3123957fcd42e78)

Original-Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>
GitOrigin-RevId: c17bcab857dbf2ec3100b2d0c3123957fcd42e78
Cr-Build-Id: 8716800981476283153
Cr-Build-Url: https://cr-buildbucket.appspot.com/build/8716800981476283153
Copybot-Job-Name: zephyr-hal_stm32-copybot-downstream
Change-Id: Ib249da5b71f86246e36d8682c4d53610319582cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/hal_stm32/+/6478643
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Commit-Queue: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Bot-Commit: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
diff --git a/stm32cube/stm32h7rsxx/README b/stm32cube/stm32h7rsxx/README
index fd29c71..4e2cb35 100644
--- a/stm32cube/stm32h7rsxx/README
+++ b/stm32cube/stm32h7rsxx/README
@@ -44,10 +44,6 @@
     -Added stm32cube/stm32h7rsxx/drivers/include/stm32_assert.h
     -Removed unused stm32cube/stm32h7rsxx/drivers/include/stm32_assert_template.h
 
-   *configure the SMPS on the stm32h7s7 so that power config is possible
-    on the stm32h7s78 disco kit
-    -internal ticket 175303
-
    *Fix to remove PAGESIZE definition which conflicts with POSIX
     Impacted files:
      drivers/include/Legacy/stm32_hal_legacy.h
diff --git a/stm32cube/stm32h7rsxx/soc/stm32h7s7xx.h b/stm32cube/stm32h7rsxx/soc/stm32h7s7xx.h
index 1c19d8a..d343564 100644
--- a/stm32cube/stm32h7rsxx/soc/stm32h7s7xx.h
+++ b/stm32cube/stm32h7rsxx/soc/stm32h7s7xx.h
@@ -219,8 +219,6 @@
 /* ================                           Processor and Core Peripheral Section                           ================ */
 /* =========================================================================================================================== */
 
-#define SMPS       /*!< Switched mode power supply feature */
-
 /**
   * @brief Configuration of the Cortex-M7 Processor and Core Peripherals
    */