refactor(EnvelopeReceiver): remove companyName property

EnvelopeGenerator.Domain/Entities/EnvelopeReceiver.cs

@@ -18,7 +18,7 @@ public class EnvelopeReceiver
     public EnvelopeReceiver()
     {
 #if NETFRAMEWORK
-        Company = string.Empty;
+        CompanyName = string.Empty;
 #endif
     }
 
@@ -39,7 +39,11 @@ public class EnvelopeReceiver
     public string JobTitle { get; set; }
 
     [Column("COMPANY_NAME", TypeName = "nvarchar(128)")]
-    public string CompanyName { get; set; }
+    public string
+#if NET
+        ?
+#endif
+        CompanyName { get; set; }
 
     [Column("PRIVATE_MESSAGE", TypeName = "nvarchar(max)")]
     public string PrivateMessage { get; set; }
@@ -71,13 +75,6 @@ public class EnvelopeReceiver
     [ForeignKey("ReceiverId")]
     public Receiver Receiver { get; set; }
 
-    [Column("COMPANY_NAME")]
-    public string
-#if NET
-        ?
-#endif
-        Company { get; set; }
-
     #region Model of old serice
     [NotMapped]
     public Constants.ReceiverStatus Status { get; set; }