FreeBSD: remove QAT, lz4, and related Linux-only repository registrations.

Intel QAT (qatlib, qatzip, qat_zstd), CryptoMB (ipp_crypto), numactl,
uadk, and lz4 are Linux-only hardware acceleration / build dependencies
that are never built on FreeBSD.  Remove their repository registrations
so Bazel does not attempt to fetch them, and remove the lz4 foreign_cc
build target and its use in librdkafka_build.

--- a/bazel/repositories.bzl
+++ b/bazel/repositories.bzl
@@ -187,13 +187,6 @@
     _com_github_grpc_grpc()
     _rules_proto_grpc()
     _icu()
-    _ipp_crypto()
-    _numactl()
-    _uadk()
-    _qatlib()
-    _qatzip()
-    _qat_zstd()
-    _lz4()
     _yaml_cpp()
     _libevent()
     _luajit()

--- a/bazel/foreign_cc/BUILD
+++ b/bazel/foreign_cc/BUILD
@@ -50,25 +50,6 @@
         "//bazel:linux": [":liburing"],
         "//conditions:default": [],
     }),
-)
-
-make(
-    name = "lz4",
-    args = [
-        "MOREFLAGS='-fPIC'",
-        "BUILD_SHARED=no",
-    ],
-    lib_source = "@lz4//:all",
-    out_static_libs = [
-        "liblz4.a",
-    ],
-    tags = ["skip_on_windows"],
-    targets = [
-        "lib",
-        "install",
-    ],
-    visibility = ["//visibility:public"],
-    alwayslink = False,
 )
 
 # Kafka client dependency used by Kafka-mesh filter.
@@ -89,7 +70,6 @@
     targets = [
         "ARFLAGS='' WITH_LDS='n' libs install-subdirs",
     ],
-    deps = [":lz4"],
     alwayslink = True,
 )