hsakmt: Remove unused functions

The fmm_node_[added|removed] functions were added in the initial FMM
support, but weren't used. Remove them now since no one's referencing
them

Change-Id: I1e46e57294a72012227b38f46c7099de0b9263be
Signed-off-by: Kent Russell <kent.russell@amd.com>


[ROCm/ROCR-Runtime commit: 3b61f75f49]

projects/rocr-runtime/libhsakmt/src/fmm.h

@@ -69,8 +69,6 @@ HSAKMT_STATUS hsakmt_fmm_return_asan_header_page(void* address);
 #endif
 
 /* Topology interface*/
-HSAKMT_STATUS fmm_node_added(HSAuint32 gpu_id);
-HSAKMT_STATUS fmm_node_removed(HSAuint32 gpu_id);
 HSAKMT_STATUS hsakmt_fmm_get_aperture_base_and_limit(aperture_type_e aperture_type, HSAuint32 gpu_id,
 		HSAuint64 *aperture_base, HSAuint64 *aperture_limit);