Removed unnecessary dependency on libnm-util-dev, which is no longer

available in buster and bionic.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

CMakeLists.txt

@@ -1138,15 +1138,6 @@ endif( )
 list( APPEND TDECORE_LIBRARY_DIRS ${DBUS_TQT_LIBRARY_DIRS} )
 
 
-if( WITH_NETWORK_MANAGER_BACKEND )
-  ##### check for libnm-util ###########################
-  pkg_search_module( NM_UTIL libnm-util )
-  if( NOT NM_UTIL_FOUND )
-    tde_message_fatal( "libnm-util are required, but not found on your system" )
-  endif( )
-endif( WITH_NETWORK_MANAGER_BACKEND )
-
-
 ##### Add '[KDE4]' to KDE4 menu items #########
 
 if( WITH_KDE4_MENU_SUFFIX )