Remove this Useless Parent Layout in Android Client

Warning Message:
../../src/main/res/layout/activity_form_entry_patient_list.xml:20: This LinearLayout layout or its LinearLayout parent is useless

activity_form_entry_patient_list.xml

Fix the above warning message.

Resources:

1. OpenMRS Android Client Github Repository
2. Pull Request Tips
3. Using Git

Submission Steps:

• Fork the OpenMRS Android Client [1] and clone it.
• Open the project in Android Studio and fix the warning.
• Make a Pull Request [2].
• Submit a URL to your Pull Request.