Remove BaseModel and BaseService from Jobs namespace

Deleted BaseModel and BaseService classes, along with their
associated using statements and members. This removes the
abstraction layers for database, logging, and state management
from EnvelopeGenerator.ServiceHost.Jobs.

EnvelopeGenerator.ServiceHost/Jobs/BaseModel.cs

@@ -1,18 +0,0 @@
-using DigitalData.Modules.Database;
-using DigitalData.Modules.Logging;
-
-namespace EnvelopeGenerator.ServiceHost.Jobs;
-
-public abstract class BaseModel
-{
-    protected MSSQLServer Database { get; }
-    protected Logger Logger { get; }
-    protected State State { get; }
-
-    protected BaseModel(State state)
-    {
-        Logger = state.LogConfig!.GetLogger();
-        Database = state.Database!;
-        State = state;
-    }
-}

EnvelopeGenerator.ServiceHost/Jobs/BaseService.cs

@@ -1,13 +0,0 @@
-using DigitalData.Modules.Base;
-
-namespace EnvelopeGenerator.ServiceHost.Jobs;
-
-public class BaseService : BaseClass
-{
-    protected State State { get; }
-
-    public BaseService(State state) : base(state.LogConfig!)
-    {
-        State = state;
-    }
-}