Revert "#280 - added support for Managed Oracle Driver"

This reverts commit 406d618.

Author: chester89

src/FluentNHibernate.Testing/Cfg/Db/OracleManagedDataClientConfigurationTester.cs

@@ -99,7 +99,6 @@
     <Compile Include="AutoMapping\Overrides\ClassMappingOverrides.cs" />
     <Compile Include="AutoMapping\Overrides\CompositeIdOverrides.cs" />
     <Compile Include="AutoMapping\Overrides\HibernateMappingOverrides.cs" />
-    <Compile Include="Cfg\Db\OracleManagedDataClientConfigurationTester.cs" />
     <Compile Include="Cfg\Db\SqlAnywhereConfigurationTester.cs" />
     <Compile Include="DomainModel\Mapping\ManyToManySelfReferencedInverseIntegrationTester.cs" />
     <Compile Include="DomainModel\Mapping\MultipleKeyColumnsTester.cs" />

src/FluentNHibernate.Testing/FluentNHibernate.Testing.csproj

@@ -91,7 +91,6 @@
     <Compile Include="Automapping\Steps\HasManyToManyStep.cs" />
     <Compile Include="Automapping\Steps\CollectionStep.cs" />
     <Compile Include="Automapping\Steps\IAutomappingStep.cs" />
-    <Compile Include="Cfg\Db\OracleManagedDataClientConfiguration.cs" />
     <Compile Include="Cfg\Db\SQLAnywhereConfiguration.cs" />
     <Compile Include="Cfg\Db\SybaseSQLAnywhereConnectionStringBuilder.cs" />
     <Compile Include="Cfg\Db\IngresConfiguration.cs" />