[nrf fromlist] doc: doxygen: remove rst utilities

We no longer render Doxygen content in Sphinx after the removal of
breathe, so let's remove rst related aliases from Doxyfile. Also adjust
some headers that contained rst content.

Upstream PR: zephyrproject-rtos/zephyr#80362

Signed-off-by: Gerard Marull-Paretas <[email protected]>
(cherry picked from commit 1c0c8db68a865ee06f280a7c1a9efbcaa13d47bd)

Author: gmarull

doc/zephyr.doxyfile.in

@@ -279,24 +279,22 @@ TAB_SIZE               = 8
 # with the commands \{ and \} for these it is advised to use the version @{ and
 # @} or use a double escape (\\{ and \\})
 
-ALIASES                = "rst=\verbatim embed:rst:leading-asterisk" \
-                         endrst=\endverbatim \
-                         "kconfig{1}=\htmlonly <code>\1</code> \endhtmlonly \xmlonly <verbatim>embed:rst:inline :kconfig:option:`\1`</verbatim> \endxmlonly" \
+ALIASES                = "kconfig{1}=\verbatim \1 \endverbatim" \
                          "req{1}=\ref ZEPH_\1 \"ZEPH-\1\"" \
                          "satisfy{1}=\xrefitem satisfy \"Satisfies requirement\" \"Requirement Implementation\" \1" \
                          "verify{1}=\xrefitem verify \"Verifies requirement\" \"Requirement Verification\" \1" \
                          "kconfig_dep{1}=\attention Available only when the following Kconfig option is enabled: \kconfig{\1}." \
                          "kconfig_dep{2}=\attention Available only when the following Kconfig options are enabled: \kconfig{\1}, \kconfig{\2}." \
                          "kconfig_dep{3}=\attention Available only when the following Kconfig options are enabled: \kconfig{\1}, \kconfig{\2}, \kconfig{\3}." \
                          "funcprops=\par \"Function properties (list may not be complete)\"" \
-                         "reschedule=\htmlonly reschedule \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_reschedule`</verbatim> \endxmlonly" \
-                         "sleep=\htmlonly sleep \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_sleep`</verbatim> \endxmlonly" \
-                         "no_wait=\htmlonly no-wait \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_no-wait`</verbatim> \endxmlonly" \
-                         "isr_ok=\htmlonly isr-ok \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_isr-ok`</verbatim> \endxmlonly" \
-                         "pre_kernel_ok=\htmlonly pre-kernel-ok \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_pre-kernel-ok`</verbatim> \endxmlonly" \
-                         "async=\htmlonly async \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_async`</verbatim> \endxmlonly" \
+                         "reschedule=\verbatim reschedule \endverbatim" \
+                         "sleep=\verbatim sleep \endverbatim" \
+                         "no_wait=\verbatim no-wait \endverbatim" \
+                         "isr_ok=\verbatim isr-ok \endverbatim" \
+                         "pre_kernel_ok=\verbatim pre-kernel-ok \endverbatim" \
+                         "async=\verbatim async \endverbatim" \
                          "atomic_api=As for all atomic APIs, includes a full/sequentially-consistent memory barrier (where applicable)." \
-                         "supervisor=\htmlonly supervisor \endhtmlonly \xmlonly <verbatim>embed:rst:inline :ref:`api_term_supervisor`</verbatim> \endxmlonly"
+                         "supervisor=\verbatim supervisor \endverbatim"
 
 # Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources
 # only. Doxygen will then generate output that is more tailored for C. For