drm/panthor: Remove dead code

Remove unused function declaration in panthor_gem.h:
- `panthor_gem_prime_import_sg_table()`

Remove duplicate macro definitions:
- `MAX_CSG_PRIO`
- `MIN_CS_PER_CSG`
- `MIN_CSGS`

Signed-off-by: Florent Tomasin <florent.tomasin@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250107173310.88329-1-florent.tomasin@arm.com

drivers/gpu/drm/panthor/panthor_fw.c

@@ -201,7 +201,6 @@ struct panthor_fw_section {
 
 #define MIN_CS_PER_CSG				8
 #define MIN_CSGS				3
-#define MAX_CSG_PRIO				0xf
 
 #define CSF_IFACE_VERSION(major, minor, patch)	\
 	(((major) << 24) | ((minor) << 16) | (patch))

drivers/gpu/drm/panthor/panthor_gem.h

@@ -85,11 +85,6 @@ struct panthor_gem_object *to_panthor_bo(struct drm_gem_object *obj)
 
 struct drm_gem_object *panthor_gem_create_object(struct drm_device *ddev, size_t size);
 
-struct drm_gem_object *
-panthor_gem_prime_import_sg_table(struct drm_device *ddev,
-				  struct dma_buf_attachment *attach,
-				  struct sg_table *sgt);
-
 int
 panthor_gem_create_with_handle(struct drm_file *file,
 			       struct drm_device *ddev,

drivers/gpu/drm/panthor/panthor_sched.c

@@ -88,9 +88,6 @@
 
 #define JOB_TIMEOUT_MS				5000
 
-#define MIN_CS_PER_CSG				8
-
-#define MIN_CSGS				3
 #define MAX_CSG_PRIO				0xf
 
 #define NUM_INSTRS_PER_CACHE_LINE		(64 / sizeof(u64))