Remove redundantly tested code

Remove code that is redundantly tested.

This should not be tested here but in puppet-oslo
where this logic resides.

If we keep this and we do changes in puppet-oslo we
will break these unit tests, this is something we need
to sort out for all modules.

Change-Id: I0802fdd41954034270f4c67754891a82eb39ef5b

spec/classes/neutron_db_spec.rb

@@ -14,7 +14,6 @@ describe 'neutron::db' do
         :max_overflow   => '<SERVICE DEFAULT>',
         :pool_timeout   => '<SERVICE DEFAULT>',
       )}
-
     end
 
     context 'with specific parameters' do
@@ -43,55 +42,6 @@ describe 'neutron::db' do
         :max_overflow   => '21',
         :pool_timeout   => '21',
       )}
-
-    end
-
-    context 'with MySQL-python library as backend package' do
-      let :params do
-        { :database_connection => 'mysql+pymysql://neutron:neutron@localhost/neutron' }
-      end
-
-      it { should contain_oslo__db('neutron_config').with(
-        :connection => 'mysql+pymysql://neutron:neutron@localhost/neutron',
-      )}
-    end
-
-    context 'with postgresql backend' do
-      let :params do
-        { :database_connection => 'postgresql://neutron:neutron@localhost/neutron', }
-      end
-
-      it 'install the proper backend package' do
-        should contain_package('python-psycopg2').with(:ensure => 'present')
-      end
-
-    end
-
-    context 'with incorrect database_connection string' do
-      let :params do
-        { :database_connection => 'redis://neutron:neutron@localhost/neutron', }
-      end
-
-      it { should raise_error(Puppet::Error, /validate_re/) }
-    end
-
-    context 'with incorrect database_connection string' do
-      let :params do
-        { :database_connection => 'foo+pymysql://neutron:neutron@localhost/neutron', }
-      end
-
-      it { should raise_error(Puppet::Error, /validate_re/) }
-    end
-
-  end
-
-  shared_examples 'neutron::db on Debian' do
-    context 'using pymysql driver' do
-      let :params do
-        { :database_connection => 'mysql+pymysql://neutron:neutron@localhost/neutron' }
-      end
-
-      it { should contain_package('python-pymysql').with({ :ensure => 'present', :name => 'python-pymysql' }) }
     end
   end
 
@@ -104,10 +54,6 @@ describe 'neutron::db' do
       end
 
       it_behaves_like 'neutron::db'
-
-      if facts[:osfamily] == 'Debian'
-        it_behaves_like 'neutron::db on Debian'
-      end
     end
   end
 end