- don't set casmdata in wasm32/aasmcpu.pas, so that the aasmdef unit can override it

compiler/wasm32/aasmcpu.pas

@@ -1552,5 +1552,4 @@ uses
 initialization
   cai_cpu:=taicpu;
   cai_align:=tai_align;
-  casmdata:=TAsmData;
 end.