configure: remove missing incompatible_libav_abi references

Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -1645,7 +1645,6 @@ CONFIG_LIST="
     $PROGRAM_LIST
     $SUBSYSTEM_LIST
     fontconfig
-    incompatible_libav_abi
     memalign_hack
     memory_poisoning
     neon_clobber_test
@@ -1798,7 +1797,6 @@ HAVE_LIST_CMDLINE="
 HAVE_LIST_PUB="
     bigendian
     fast_unaligned
-    incompatible_libav_abi
 "
 
 HEADERS_LIST="