selftests/bpf: remove test_flow_dissector.sh

Now that test_flow_dissector.sh has been converted to test_progs, remove
the legacy test.

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com>
Link: https://lore.kernel.org/r/20241120-flow_dissector-v3-14-45b46494f937@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Author: Tropicao

tools/testing/selftests/bpf/.gitignore

@@ -19,7 +19,6 @@ feature
 urandom_read
 test_sockmap
 test_lirc_mode2_user
-test_flow_dissector
 flow_dissector_load
 test_tcpnotify_user
 test_libbpf

tools/testing/selftests/bpf/Makefile

@@ -133,7 +133,6 @@ TEST_PROGS := test_kmod.sh \
 	test_tunnel.sh \
 	test_lwt_seg6local.sh \
 	test_lirc_mode2.sh \
-	test_flow_dissector.sh \
 	test_xdp_vlan_mode_generic.sh \
 	test_xdp_vlan_mode_native.sh \
 	test_lwt_ip_encap.sh \
@@ -161,7 +160,6 @@ TEST_GEN_PROGS_EXTENDED = \
 	flow_dissector_load \
 	runqslower \
 	test_cpp \
-	test_flow_dissector \
 	test_lirc_mode2_user \
 	veristat \
 	xdp_features \