docs: remove some replace macros like |struct foo|

There are three files with replace macros for structs,
mapping them into Sphinx 2.x C domain references.

Well, this is broken on Sphinx 3.x. Also, for Sphinx 2.x,
the automarkup macro should be able to take care of them.

So, let's just drop those.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/admin-guide/pm/cpufreq.rst

 .. SPDX-License-Identifier: GPL-2.0
 .. include:: <isonum.txt>
 
-.. |struct cpufreq_policy| replace:: :c:type:`struct cpufreq_policy <cpufreq_policy>`
 .. |intel_pstate| replace:: :doc:`intel_pstate <intel_pstate>`
 
 =======================
@@ -92,16 +91,16 @@ control the P-state of multiple CPUs at the same time and writing to it affects
 all of those CPUs simultaneously.
 
 Sets of CPUs sharing hardware P-state control interfaces are represented by
-``CPUFreq`` as |struct cpufreq_policy| objects.  For consistency,
-|struct cpufreq_policy| is also used when there is only one CPU in the given
+``CPUFreq`` as struct cpufreq_policy objects.  For consistency,
+struct cpufreq_policy is also used when there is only one CPU in the given
 set.
 
-The ``CPUFreq`` core maintains a pointer to a |struct cpufreq_policy| object for
+The ``CPUFreq`` core maintains a pointer to a struct cpufreq_policy object for
 every CPU in the system, including CPUs that are currently offline.  If multiple
 CPUs share the same hardware P-state control interface, all of the pointers
-corresponding to them point to the same |struct cpufreq_policy| object.
+corresponding to them point to the same struct cpufreq_policy object.
 
-``CPUFreq`` uses |struct cpufreq_policy| as its basic data type and the design
+``CPUFreq`` uses struct cpufreq_policy as its basic data type and the design
 of its user space interface is based on the policy concept.
 
 

Documentation/driver-api/device_link.rst

-.. |struct dev_pm_domain| replace:: :c:type:`struct dev_pm_domain <dev_pm_domain>`
-.. |struct generic_pm_domain| replace:: :c:type:`struct generic_pm_domain <generic_pm_domain>`
-
-
 .. _device_link:
 
 ============
@@ -166,7 +162,7 @@ Examples
   is the same as if the MMU was the parent of the master device.
 
   The fact that both devices share the same power domain would normally
-  suggest usage of a |struct dev_pm_domain| or |struct generic_pm_domain|,
+  suggest usage of a struct dev_pm_domain or struct generic_pm_domain,
   however these are not independent devices that happen to share a power
   switch, but rather the MMU device serves the busmaster device and is
   useless without it.  A device link creates a synthetic hierarchical
@@ -202,7 +198,7 @@ Examples
 Alternatives
 ============
 
-* A |struct dev_pm_domain| can be used to override the bus,
+* A struct dev_pm_domain can be used to override the bus,
   class or device type callbacks.  It is intended for devices sharing
   a single on/off switch, however it does not guarantee a specific
   suspend/resume ordering, this needs to be implemented separately.
@@ -211,7 +207,7 @@ Alternatives
   suspended.  Furthermore it cannot be used to enforce a specific shutdown
   ordering or a driver presence dependency.
 
-* A |struct generic_pm_domain| is a lot more heavyweight than a
+* A struct generic_pm_domain is a lot more heavyweight than a
   device link and does not allow for shutdown ordering or driver presence
   dependencies.  It also cannot be used on ACPI systems.