improve platform defines in inc files

CryptoLib/src/Include/CryptoLib.inc

@@ -47,12 +47,6 @@
      {$DEFINE CRYPTOLIB_AARCH64}
   {$ENDIF}
 
-  {$IFDEF IOS}
-    {$IFNDEF CPUARM}
-       {$DEFINE CRYPTOLIB_IOSSIM}
-    {$ENDIF}
-  {$ENDIF}
-
   {$IFDEF IOS}
      {$DEFINE CRYPTOLIB_IOS}
   {$ENDIF}

CryptoLib/src/Include/CryptoLibFPC.inc

@@ -55,7 +55,7 @@
    {$IF DEFINED(BSD)}
       {$IF DEFINED(DARWIN)}
          {$DEFINE CRYPTOLIB_APPLE}
-         {$IF DEFINED(CRYPTOLIB_ARM) OR DEFINED(CRYPTOLIB_AARCH64)}
+         {$IF DEFINED(IOS) OR DEFINED(IPHONESIM)}
             {$DEFINE CRYPTOLIB_IOS}
          {$ELSE}
             {$DEFINE CRYPTOLIB_MACOS}