Allow pkrs on gen2 eggs

See #1257 item 7; it appears this info on Bulbapedia is incorrect -- disassembly does not care if the pkm slot is an egg or not.

5f197c53f4/engine/events/pokerus/pokerus.asm (L7)

PKHeX.Core/Legality/Verifiers/MiscVerifier.cs

@@ -70,11 +70,7 @@ public void VerifyMiscG1(LegalityAnalysis data)
         {
             var pkm = data.pkm;
             if (pkm.IsEgg)
-            {
                 VerifyMiscEggCommon(data);
-                if (pkm.PKRS_Cured || pkm.PKRS_Infected)
-                    data.AddLine(GetInvalid(LEggPokerus, Egg));
-            }
 
             if (!(pkm is PK1 pk1))
                 return;