pipewire: Drop support for 0.2 API

According to repology.org, all relevant distributions now ship pipewire 0.3, so we can drop the pretty ugly #if/#else code that was added to support both at compile-time.

pipewire/meson.build

@@ -8,18 +8,12 @@ if get_option('pipewire')
 	deps_pipewire = [ dep_libweston_private ]
 
 	dep_libpipewire = dependency('libpipewire-0.3', required: false)
-	if not dep_libpipewire.found()
-		dep_libpipewire = dependency('libpipewire-0.2', required: false)
-	endif
 	if not dep_libpipewire.found()
 		error('Pipewire plugin requires libpipewire which was not found. ' + user_hint)
 	endif
 	deps_pipewire += dep_libpipewire
 
 	dep_libspa = dependency('libspa-0.2', required: false)
-	if not dep_libspa.found()
-		dep_libspa = dependency('libspa-0.1', required: false)
-	endif
 	if not dep_libspa.found()
 		error('Pipewire plugin requires libspa which was not found. ' + user_hint)
 	endif