Remove unnecessary variants causing apk bloat

We will see huge savings when string translations are removed
for values-sw600dp because there was special casing for tablets
in a error message that was too technical for normal users.

Also removes more holo assets that are now legacy.

Test: built Contacts and GoogleContacts
      ran Tests

Bug: 33251913
Change-Id: Id9d3172fa4765f566dcc9832dcb6418164503aee