configure.ac: drop unused dependencies

Change-Id: I82083c33b0448113c74b21ed6c51cda121bc9f79

configure.ac

@@ -34,10 +34,6 @@ m4_ifdef([AX_CHECK_COMPILE_FLAG], [], [
 	AC_MSG_ERROR([Please install autoconf-archive; re-run 'autoreconf -fi' for it to take effect.])
 	])
 
-dnl checks for libraries
-AC_SEARCH_LIBS([dlopen], [dl dld], [LIBRARY_DL="$LIBS";LIBS=""])
-AC_SUBST(LIBRARY_DL)
-
 
 PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.11.0)
 PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.11.0)
@@ -104,14 +100,6 @@ dnl checks for header files
 AC_HEADER_STDC
 AC_CHECK_HEADERS(dbi/dbd.h,,AC_MSG_ERROR(DBI library is not installed))
 
-found_pcap=yes
-AC_CHECK_HEADERS(pcap/pcap.h,,found_pcap=no)
-AM_CONDITIONAL(HAVE_PCAP, test "$found_pcap" = yes)
-
-found_cdk=yes
-AC_CHECK_HEADERS(cdk/cdk.h,,found_cdk=no)
-AM_CONDITIONAL(HAVE_LIBCDK, test "$found_cdk" = yes)
-
 found_sqlite3=yes
 PKG_CHECK_MODULES(SQLITE3, sqlite3, ,found_sqlite3=no)
 AM_CONDITIONAL(HAVE_SQLITE3, test "$found_sqlite3" = yes)