doc: remove uncessary .. only:: dirs

Removed some only directives that are no longer needed with include being processed correctly

docs/en/api-reference/system/intr_alloc.rst

@@ -10,9 +10,9 @@ Overview
   to the interrupt mux. Because there are more interrupt sources than interrupts, sometimes it makes sense to share an interrupt in
   multiple drivers. The esp_intr_alloc abstraction exists to hide all these implementation details.
 
-.. only.. esp32s2
+.. only:: esp32s2
 
-  The {IDF_TARGET_NAME} has one cores, with 32 interrupts each. Each interrupt has a certain priority level, most (but not all) interrupts are connected
+  The {IDF_TARGET_NAME} has one core, with 32 interrupts. Each interrupt has a certain priority level, most (but not all) interrupts are connected
   to the interrupt mux. Because there are more interrupt sources than interrupts, sometimes it makes sense to share an interrupt in
   multiple drivers. The esp_intr_alloc abstraction exists to hide all these implementation details.
 

docs/en/api-reference/system/system_time.rst

@@ -19,16 +19,7 @@ The settings for the system time source are as follows:
 - High-resolution timer
 - None
 
-..
-    (Implementation note: Using only blocks in this file not IDF_CONFIG_CFG_PREFIX, until the zh_CN translation for this document is done.)
-
-.. only:: esp32
-
-    It is recommended to stick to the default setting which provides maximum accuracy. If you want to choose a different timer, configure :ref:`CONFIG_ESP32_TIME_SYSCALL` in project configuration.
-
-.. only:: esp32s2
-
-    It is recommended to stick to the default setting which provides maximum accuracy. If you want to choose a different timer, configure :ref:`CONFIG_ESP32S2_TIME_SYSCALL` in project configuration.
+It is recommended to stick to the default setting which provides maximum accuracy. If you want to choose a different timer, configure :ref:`CONFIG_{IDF_TARGET_CFG_PREFIX}_TIME_SYSCALL` in project configuration.
 
 
 RTC Clock Source
@@ -44,13 +35,7 @@ The RTC timer has the following clock sources:
 
 - ``Internal 8.5MHz oscillator, divided by 256 (~33kHz)``. Provides better frequency stability than the ``internal 150kHz RC oscillator`` at the expense of higher (by 5 uA) deep sleep current consumption. It also does not require external components.
 
-.. only:: esp32
-
-    The choice depends on your requirements for system time accuracy and power consumption in sleep modes. To modify the RTC clock source, set :ref:`CONFIG_ESP32_RTC_CLK_SRC` in project configuration.
-
-.. only:: esp32s2
-
-    The choice depends on your requirements for system time accuracy and power consumption in sleep modes. To modify the RTC clock source, set :ref:`CONFIG_ESP32S2_RTC_CLK_SRC` in project configuration.
+The choice depends on your requirements for system time accuracy and power consumption in sleep modes. To modify the RTC clock source, set :ref:`CONFIG_{IDF_TARGET_CFG_PREFIX}_RTC_CLK_SRC` in project configuration.
 
 More details on wiring requirements for the ``External 32kHz crystal`` and ``External 32kHz oscillator at 32K_XP pin`` sources can be found in Section 2.1.4 *Crystal Oscillator* of `Hardware Design Guidelines <https://www.espressif.com/sites/default/files/documentation/esp32_hardware_design_guidelines_en.pdf#page=10>`_.
 

docs/zh_CN/api-reference/system/power_management.rst

@@ -33,13 +33,7 @@ ESP-IDF 中集成的电源管理算法可以根据应用程序组件的需求，
 
 - ``light_sleep_enable``：没有获取任何管理锁时，决定系统是否需要自动进入 Light-sleep 状态 (``true``/``false``)。
 
-.. only:: esp32
-
-    或者，如果在 menuconfig 中启用了 :ref:`CONFIG_PM_DFS_INIT_AUTO` 选项，最大 CPU 频率将由 :ref:`CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ` 设置决定，最小 CPU 频率将锁定为 XTAL 频率。
-
-.. only:: esp32s2
-
-    或者，如果在 menuconfig 中启用了 :ref:`CONFIG_PM_DFS_INIT_AUTO` 选项，最大 CPU 频率将由 :ref:`CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ` 设置决定，最小 CPU 频率将锁定为 XTAL 频率。
+或者，如果在 menuconfig 中启用了 :ref:`CONFIG_PM_DFS_INIT_AUTO` 选项，最大 CPU 频率将由 :ref:`CONFIG_{IDF_TARGET_CFG_PREFIX}_DEFAULT_CPU_FREQ_MHZ` 设置决定，最小 CPU 频率将锁定为 XTAL 频率。
 
 .. note::