disp: msm: sde: remove memblock_free api

Remove memblock_free api, since currently is not
part of the ack tree. This prevents modpost compilation
errors for the display driver.

Change-Id: I8f657a123fbecc5d4b029d511b8d08fec2293f0c
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>

msm/sde/sde_kms.c

@@ -764,11 +764,6 @@ static int _sde_kms_release_shared_buffer(unsigned int mem_addr,
 	pfn_start = mem_addr >> PAGE_SHIFT;
 	pfn_end = (mem_addr + splash_buffer_size) >> PAGE_SHIFT;
 
-	ret = memblock_free(mem_addr, splash_buffer_size);
-	if (ret) {
-		SDE_ERROR("continuous splash memory free failed:%d\n", ret);
-		return ret;
-	}
 	for (pfn_idx = pfn_start; pfn_idx < pfn_end; pfn_idx++)
 		free_reserved_page(pfn_to_page(pfn_idx));