Remove unused ANQP parsing code

Remove classes used to parse ANQP elements that are unused.
The deleted classes are:
  - CapabilityListElement
  - CivicLocationElement
  - EmergencyNumberElement
  - GEOLocationElement
  - GenericStringElement
  - HSCapabilityListElement
  - HSIconFileElement
  - HSOsuProvidersElement
  - NetworkAuthenticationTypeElement
  - OSUProvider

BUG: 30291919
Change-Id: I5b2c3daeb5260043fbd650cafc2a512198253a4a
TEST: Framework compiles successfully.
13 files changed
tree: 8024763e380ce21cadf8985f7d90a0412528c7f7
  1. libwifi_hal/
  2. libwifi_system/
  3. service/
  4. tests/