etc/builtin.conf: minor edits

The previous commit merely copied the profile string to a file (plus
changing how RPI-specific defaults are initialized), now make some
changes on top of it. In particular, remove the --input-lirc option,
which was removed a long time ago, but forgotten from the libmpv
profile.

etc/builtin.conf

@@ -1,3 +1,7 @@
+# This file is baked into the mpv binary at compile time, and automatically
+# loaded at early initialization time. Some of the profiles are automatically
+# applied at later stages during loading.
+
 [pseudo-gui]
 terminal=no
 force-window=yes
@@ -13,11 +17,11 @@ osc=no
 ytdl=no
 input-default-bindings=no
 input-vo-keyboard=no
-input-lirc=no
+stop-playback-on-init-failure=yes
+# OSX/Cocoa global input hooks
 input-appleremote=no
 input-media-keys=no
 input-app-events=no
-stop-playback-on-init-failure=yes
 
 [encoding]
 vo=lavc