Revert "Add #ifdef declarations for NON_MATCHING code"

This reverts commit 42807160cf.

It makes searching for NON_MATCHING comment descriptions much less
convenient in most text editors or IDEs, and we want the function
CSV to be the single source of truth for function statuses. Having
a function marked as matching but not built because of a stray #ifdef
would be bad.

src/KingSystem/System/OverlayArena.cpp

@@ -16,8 +16,7 @@ OverlayArena::~OverlayArena() {
     destroy();
 }
 
-// branching at the end (csel instead of a branch)
-#ifdef NON_MATCHING
+// NON_MATCHING: branching at the end (csel instead of a branch)
 bool OverlayArena::init(const OverlayArena::InitArg& arg) {
     if (!arg.heap) {
         res::stubbedLogFunction();
@@ -60,7 +59,6 @@ bool OverlayArena::init(const OverlayArena::InitArg& arg) {
 
     return true;
 }
-#endif
 
 void OverlayArena::stubbed() {}
 
@@ -128,8 +126,7 @@ bool OverlayArena::checkIsOom() const {
 // FIXME: figure out what sead function this is
 bool seadCheckPointer(void* ptr);
 
-// branching
-#ifdef NON_MATCHING
+// NON_MATCHING: branching
 util::DualHeap* OverlayArena::makeDualHeap(u32 size, const sead::SafeString& name,
                                            sead::Heap::HeapDirection direction,
                                            res::ResourceUnit* unit, bool) {
@@ -160,7 +157,6 @@ util::DualHeap* OverlayArena::makeDualHeap(u32 size, const sead::SafeString& nam
     mFlags.set(Flag::_4);
     return heap;
 }
-#endif
 
 void OverlayArena::addSize(s32 size) {
     mSize += size;