drm/amd/amdgpu/gfx_v7_0: Remove unused struct definition

Fixes the following W=1 kernel build warning(s):

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:5211:45: warning: ‘gfx_v7_0_ip_block’ defined but not used [-Wunused-const-variable=]

Cc: Alex Deucher <[e-mail]>
Cc: "Christian König" <[e-mail]>
Cc: David Airlie <[e-mail]>
Cc: Daniel Vetter <[e-mail]>
Cc: Sumit Semwal <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Lee Jones <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c

···
 	cu_info->lds_size = 64;
 }
 
-static const struct amdgpu_ip_block_version gfx_v7_0_ip_block =
-{
-	.type = AMD_IP_BLOCK_TYPE_GFX,
-	.major = 7,
-	.minor = 0,
-	.rev = 0,
-	.funcs = &gfx_v7_0_ip_funcs,
-};
-
 const struct amdgpu_ip_block_version gfx_v7_1_ip_block =
 {
 	.type = AMD_IP_BLOCK_TYPE_GFX,

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.h

···
 #ifndef __GFX_V7_0_H__
 #define __GFX_V7_0_H__
 
-extern const struct amdgpu_ip_block_version gfx_v7_0_ip_block;
 extern const struct amdgpu_ip_block_version gfx_v7_1_ip_block;
 extern const struct amdgpu_ip_block_version gfx_v7_2_ip_block;
 extern const struct amdgpu_ip_block_version gfx_v7_3_ip_block;