Neon support needs to be enabled unconditionally in mkspecs, so removing
-neon and -no-neon command line options from configure app. It now has
the same functionality as configure script.
Task-number: QTBUG-44690
Change-Id: Iaf5bf7ac4e11fcb798f643660e48a4ed3ce1036b
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>