General clean up of code

core/mem/allocators.odin

@@ -140,14 +140,6 @@ arena_init :: proc(a: ^Arena, data: []byte) {
 	a.temp_count = 0
 }
 
-@(deprecated="prefer 'mem.arena_init'")
-init_arena :: proc(a: ^Arena, data: []byte) {
-	a.data       = data
-	a.offset     = 0
-	a.peak_used  = 0
-	a.temp_count = 0
-}
-
 /*
 Allocate memory from an arena.
 
@@ -786,14 +778,6 @@ stack_init :: proc(s: ^Stack, data: []byte) {
 	s.peak_used   = 0
 }
 
-@(deprecated="prefer 'mem.stack_init'")
-init_stack :: proc(s: ^Stack, data: []byte) {
-	s.data        = data
-	s.prev_offset = 0
-	s.curr_offset = 0
-	s.peak_used   = 0
-}
-
 /*
 Allocate memory from stack.
 
@@ -1162,13 +1146,6 @@ small_stack_init :: proc(s: ^Small_Stack, data: []byte) {
 	s.peak_used = 0
 }
 
-@(deprecated="prefer 'small_stack_init'")
-init_small_stack :: proc(s: ^Small_Stack, data: []byte) {
-	s.data      = data
-	s.offset    = 0
-	s.peak_used = 0
-}
-
 /*
 Small stack allocator.
 

core/mem/mem.odin

@@ -685,11 +685,4 @@ calc_padding_with_header :: proc "contextless" (ptr: uintptr, align: uintptr, he
 		}
 	}
 	return int(padding)
-}
-
-@(require_results, deprecated="prefer 'slice.clone'")
-clone_slice :: proc(slice: $T/[]$E, allocator := context.allocator, loc := #caller_location) -> (new_slice: T) {
-	new_slice, _ = make(T, len(slice), allocator, loc)
-	runtime.copy(new_slice, slice)
-	return new_slice
-}
+}