Merge (most) build dependencies in debian/control with downstream

 * dpatch cannot be removed yet, as packaging standard isn't updated
 * we don't want to remove libssl at all, as in upstream we rather
   use system provided OpenSSL than bundled, non-system updated and
   less commonly trusted YaSSL
 * keep versioned dependencies, they might prove helpful when building
   for multiple distros and releases

debian/control

@@ -10,8 +10,6 @@ Build-Depends: bison,
                debhelper,
                dh-apparmor,
                dpatch,
-               gawk,
-               hardening-wrapper,
                libaio-dev,
                libboost-dev,
                ${MAYBE_LIBCRACK}
@@ -21,11 +19,9 @@ Build-Depends: bison,
                libpam0g-dev,
                libreadline-gplv2-dev,
                libssl-dev,
-               libwrap0-dev (>= 7.6-8.3),
                lsb-release,
                perl (>= 5.6.0),
                po-debconf,
-               procps | hurd,
                psmisc,
                zlib1g-dev (>= 1:1.1.3-5~)
 Standards-Version: 3.8.2