Extra rspec test is not needed

spec/bson/byte_buffer_spec.rb

@@ -486,28 +486,5 @@
 
       it_behaves_like 'a rewindable buffer'
     end
-
-    context 'when the buffer is instantiated from a deserialization' do
-
-      let(:string) do
-        "#{BSON::Int32::BSON_TYPE}#{BSON::Int32::BSON_TYPE}"
-      end
-
-      let(:buffer) do
-        string.to_bson
-      end
-
-      before do
-        buffer.rewind!
-      end
-
-      it 'resets the read position to 0' do
-        expect(buffer.read_position).to eq(0)
-      end
-
-      it 'starts subsequent reads at position 0' do
-        expect(buffer.get_bytes(2)).to eq(string.to_bson.get_bytes(2))
-      end
-    end
   end
 end