drm/amdgpu: remove the redeclaration of variable i

Variable "i" has been redeclared as integer later in the function
which is wrong and not serving any purpose.

Fixes: 899fbde ("drm/amdgpu: replace get_user_pages with HMM mirror helpers")
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: amd-sukhatri

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

@@ -884,7 +884,6 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
 	amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
 		bool userpage_invalidated = false;
 		struct amdgpu_bo *bo = e->bo;
-		int i;
 
 		r = amdgpu_ttm_tt_get_user_pages(bo, &e->range);
 		if (r)