Remove deprecated HostPowerManagement code

Signed-off-by: Michael Richters <gedankenexperimenter@gmail.com>

docs/UPGRADING.md

@@ -1092,6 +1092,10 @@ Second, the `Layer.eventHandler()` function has been deprecated. There wasn't mu
 
 # Removed APIs
 
+#### `HostPowerManagement.enableWakeup()`
+
+This deprecated function was removed on **2022-03-03**.  The firmware now supports wakeup by default, so any references to it can be safely removed.
+
 #### `EEPROMSettings.version(uint8_t version)`
 
 This deprecated function was removed on **2022-03-03**.  The information stored is not longer intended for user code to set, but instead is used internally.

plugins/Kaleidoscope-HostPowerManagement/src/kaleidoscope/plugin/HostPowerManagement.h

@@ -19,12 +19,6 @@
 
 #include "kaleidoscope/Runtime.h"
 
-#define _DEPRECATED_MESSAGE_ENABLEWAKEUP                                    \
-  "The HostPowerManagement.enableWakeup() call is not necessary anymore,\n" \
-  "the firmware supports wakeup by default now. The line can be safely\n"   \
-  "removed.\n"                                                          \
-  "This function will be removed after 2021-08-01."
-
 namespace kaleidoscope {
 namespace plugin {
 class HostPowerManagement : public kaleidoscope::Plugin {
@@ -37,8 +31,6 @@ class HostPowerManagement : public kaleidoscope::Plugin {
 
   HostPowerManagement(void) {}
 
-  void enableWakeup(void) DEPRECATED(ENABLEWAKEUP) {}
-
   EventHandlerResult beforeEachCycle();
 
  private: