fixed few of deepsource's founds

Author: wilbit

src/NHibernate.Test/TypesTest/BooleanTypeFixture.cs

@@ -12,10 +12,7 @@ namespace NHibernate.Test.TypesTest
 	[TestFixture]
 	public class BooleanTypeFixture : TypeFixtureBase
 	{
-		protected override string TypeName
-		{
-			get { return "Boolean"; }
-		}
+		protected override string TypeName => "Boolean";
 
 		/// <summary>
 		/// Verify Equals will correctly determine when the property

src/NHibernate/Type/BooleanType.cs

@@ -48,15 +48,9 @@ public override object Get(DbDataReader rs, string name, ISessionImplementor ses
 			return GetBooleanAsObject(Convert.ToBoolean(rs[name]));
 		}
 
-		public override System.Type PrimitiveClass
-		{
-			get { return typeof(bool); }
-		}
+		public override System.Type PrimitiveClass => typeof(bool);
 
-		public override System.Type ReturnedClass
-		{
-			get { return typeof(bool); }
-		}
+		public override System.Type ReturnedClass => typeof(bool);
 
 		public override void Set(DbCommand cmd, object value, int index, ISessionImplementor session)
 		{