cmake: Remove ENABLE_SPARKLE_UPDATER option

Since public key and appcast are now options we simply rely on those to
decide whether or not to enable Sparkle.

CMakeLists.txt

@@ -52,10 +52,6 @@ if(OS_WINDOWS)
     "Build a multiarch installer (needs to run independently after both archs have compiled) (Windows)"
     OFF)
 
-elseif(OS_MACOS)
-  option(ENABLE_SPARKLE_UPDATER "Enable Sparkle framework for updates (macOS)"
-         OFF)
-
 elseif(OS_POSIX)
   option(LINUX_PORTABLE "Build portable version (Linux)" OFF)
   option(USE_XDG "Utilize XDG Base Directory Specification (Linux)" ON)

UI/CMakeLists.txt

@@ -445,7 +445,7 @@ elseif(OS_MACOS)
               update/shared-update.cpp update/shared-update.hpp
               update/update-helpers.cpp update/update-helpers.hpp)
 
-    if(ENABLE_SPARKLE_UPDATER)
+    if(DEFINED SPARKLE_APPCAST_URL AND DEFINED SPARKLE_PUBLIC_KEY)
       find_library(SPARKLE Sparkle)
       mark_as_advanced(SPARKLE)
 

cmake/Modules/ObsDefaults_macOS.cmake

@@ -141,10 +141,6 @@ macro(setup_obs_project)
     set_option(ENABLE_RTMPS ON)
   endif()
 
-  if(DEFINED SPARKLE_APPCAST_URL AND DEFINED SPARKLE_PUBLIC_KEY)
-    set_option(ENABLE_SPARKLE_UPDATER ON)
-  endif()
-
   set(CPACK_PACKAGE_NAME "OBS")
   set(CPACK_PACKAGE_VENDOR "${OBS_WEBSITE}")
   set(CPACK_GENERATOR "DragNDrop")

cmake/Modules/ObsHelpers_macOS.cmake

@@ -354,7 +354,7 @@ function(setup_obs_bundle target)
     set(_CODESIGN_ENTITLEMENTS \"${CMAKE_SOURCE_DIR}/cmake/bundle/macOS\")"
     COMPONENT obs_resources)
 
-  if(ENABLE_SPARKLE_UPDATER)
+  if(DEFINED SPARKLE_APPCAST_URL AND DEFINED SPARKLE_PUBLIC_KEY)
     add_custom_command(
       TARGET ${target}
       POST_BUILD