app_server & BWindowScreen: Do away with AS_GET_FRAME_BUFFER_CONFIG.

It can't work if the framebuffer is mapped per-application.
Instead, use the accelerant hook to get the framebuffer.

The BScreen methods this disables were deprecated and marked
private already, so no Haiku applications should be affected.
(If really necessary they could be reimplemented with BWindowScreen.)

Remove first _GetCardInfo in BWindowScreen; we invoke it
later, closer to where the buffer is actually used.

Tested with ParticlesII (which uses BWindowScreen) on VESA
with the new user-only-mapping accelerant.

Change-Id: I405bcfa8cb1eb2d0c346fafbc6233bef15196134
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10572
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>

headers/private/app/ServerProtocol.h

@@ -170,7 +170,6 @@ enum {
 	AS_GET_RETRACE_SEMAPHORE,
 	AS_GET_ACCELERANT_INFO,
 	AS_GET_MONITOR_INFO,
-	AS_GET_FRAME_BUFFER_CONFIG,
 
 	AS_SET_DPMS,
 	AS_GET_DPMS_STATE,

headers/private/interface/PrivateScreen.h

@@ -85,9 +85,6 @@ public:
 			status_t			GetBrightness(float*);
 			status_t			SetBrightness(float);
 
-			void*				BaseAddress();
-			uint32				BytesPerRow();
-
 private:
 	friend class BObjectList<BPrivateScreen, true>;
 
@@ -98,8 +95,6 @@ private:
 			bool				_Release();
 
 			sem_id				_RetraceSemaphore();
-			status_t			_GetFrameBufferConfig(
-									frame_buffer_config& config);
 
 	static	BPrivateScreen*		_Get(int32 id, bool check);
 	static	bool				_IsValid(int32 id);