Revert "[APU] Temp XMA context allocation region workaround"

This reverts commit 968c337d22.

src/xenia/apu/xma_decoder.cc

@@ -105,11 +105,8 @@ X_STATUS XmaDecoder::Setup(kernel::KernelState* kernel_state) {
       reinterpret_cast<cpu::MMIOWriteCallback>(MMIOWriteRegisterThunk));
 
   // Setup XMA context data.
-  // TODO(Triang3l): Find out what address is used on a real console and why it
-  // doesn't work when allocated in 4 KB pages.
-  context_data_first_ptr_ =
-      memory()->SystemHeapAlloc(sizeof(XMA_CONTEXT_DATA) * kContextCount, 256,
-                                kSystemHeapPhysical | kSystemHeapLargePages);
+  context_data_first_ptr_ = memory()->SystemHeapAlloc(
+      sizeof(XMA_CONTEXT_DATA) * kContextCount, 256, kSystemHeapPhysical);
   context_data_last_ptr_ =
       context_data_first_ptr_ + (sizeof(XMA_CONTEXT_DATA) * kContextCount - 1);
   register_file_[XE_XMA_REG_CONTEXT_ARRAY_ADDRESS].u32 =

src/xenia/memory.cc

@@ -507,9 +507,7 @@ uint32_t Memory::SystemHeapAlloc(uint32_t size, uint32_t alignment,
                                  uint32_t system_heap_flags) {
   // TODO(benvanik): lightweight pool.
   bool is_physical = !!(system_heap_flags & kSystemHeapPhysical);
-  auto heap = LookupHeapByType(
-      is_physical,
-      (system_heap_flags & kSystemHeapLargePages) ? (64 * 1024) : 4096);
+  auto heap = LookupHeapByType(is_physical, 4096);
   uint32_t address;
   if (!heap->Alloc(size, alignment,
                    kMemoryAllocationReserve | kMemoryAllocationCommit,

src/xenia/memory.h

@@ -31,7 +31,6 @@ class Memory;
 enum SystemHeapFlag : uint32_t {
   kSystemHeapVirtual = 1 << 0,
   kSystemHeapPhysical = 1 << 1,
-  kSystemHeapLargePages = 1 << 2,
 
   kSystemHeapDefault = kSystemHeapVirtual,
 };