Some strings on strings.xml file are modified

### Description
When executing the task to remove unused resources, some strings on strings.xml file are modified

Example 1:

Before

    <string name="key">sample text&#160;</string>

After

    <string name="key">sample text </string>

Example 2:

Before

    <string name="empty_string"></string>

After

    <string name="empty_string" />


