Remove SQLite specific schema condition from migrations

src/NzbDrone.Core/Datastore/Migration/123_create_netimport_table.cs

@@ -1,4 +1,4 @@
-using FluentMigrator;
+using FluentMigrator;
 using NzbDrone.Core.Datastore.Migration.Framework;
 
 namespace NzbDrone.Core.Datastore.Migration
@@ -8,7 +8,7 @@ namespace NzbDrone.Core.Datastore.Migration
     {
         protected override void MainDbUpgrade()
         {
-            if (!Schema.Schema("dbo").Table("NetImport").Exists())
+            if (!Schema.Table("NetImport").Exists())
             {
                 Create.TableForModel("NetImport")
                     .WithColumn("Enabled").AsBoolean()

src/NzbDrone.Core/Datastore/Migration/133_add_minimumavailability.cs

@@ -1,6 +1,4 @@
 using FluentMigrator;
-
-// using FluentMigrator.Expressions;
 using NzbDrone.Core.Datastore.Migration.Framework;
 using NzbDrone.Core.Movies;
 
@@ -11,12 +9,12 @@ namespace NzbDrone.Core.Datastore.Migration
     {
         protected override void MainDbUpgrade()
         {
-            if (!Schema.Schema("dbo").Table("NetImport").Column("MinimumAvailability").Exists())
+            if (!Schema.Table("NetImport").Column("MinimumAvailability").Exists())
             {
                 Alter.Table("NetImport").AddColumn("MinimumAvailability").AsInt32().WithDefaultValue((int)MovieStatusType.Released);
             }
 
-            if (!Schema.Schema("dbo").Table("Movies").Column("MinimumAvailability").Exists())
+            if (!Schema.Table("Movies").Column("MinimumAvailability").Exists())
             {
                 Alter.Table("Movies").AddColumn("MinimumAvailability").AsInt32().WithDefaultValue((int)MovieStatusType.Released);
             }

src/NzbDrone.Core/Datastore/Migration/137_add_import_exclusions_table.cs

@@ -13,7 +13,7 @@ namespace NzbDrone.Core.Datastore.Migration
     {
         protected override void MainDbUpgrade()
         {
-            if (!Schema.Schema("dbo").Table("ImportExclusions").Exists())
+            if (!Schema.Table("ImportExclusions").Exists())
             {
                 Create.TableForModel("ImportExclusions")
                     .WithColumn("TmdbId").AsInt64().NotNullable().Unique().PrimaryKey()

src/NzbDrone.Core/Datastore/Migration/140_add_alternative_titles_table.cs

@@ -1,4 +1,4 @@
-using FluentMigrator;
+using FluentMigrator;
 using NzbDrone.Core.Datastore.Migration.Framework;
 
 namespace NzbDrone.Core.Datastore.Migration
@@ -8,7 +8,7 @@ namespace NzbDrone.Core.Datastore.Migration
     {
         protected override void MainDbUpgrade()
         {
-            if (!Schema.Schema("dbo").Table("alternative_titles").Exists())
+            if (!Schema.Table("alternative_titles").Exists())
             {
                 Create.TableForModel("AlternativeTitles")
                       .WithColumn("MovieId").AsInt64().NotNullable()