no longer using dh-exec, am explicitly specifying each file's packages

Author: ka9q

debian/control

@@ -5,7 +5,6 @@ Maintainer: Phil Karn <karn@ka9q.net>
 Rules-Requires-Root: no
 Build-Depends:
  debhelper-compat (= 13),
- dh-exec,
  libairspy-dev,
  libairspyhf-dev,
  libbladerf-dev,