* rtl/atari: do not default to tinyheap for now. the compiler itself doesn't work with tinyheap for some reason

rtl/atari/system.pp

@@ -21,7 +21,7 @@ interface
 {$define FPC_IS_SYSTEM}
 {$define FPC_STDOUT_TRUE_ALIAS}
 {$define FPC_ANSI_TEXTFILEREC}
-{$define FPC_ATARI_USE_TINYHEAP}
+{.$define FPC_ATARI_USE_TINYHEAP}
 
 {$ifdef FPC_ATARI_USE_TINYHEAP}
 {$define HAS_MEMORYMANAGER}