bazel: don't use native rules for samples

ortools/constraint_solver/samples/code_samples.bzl

@@ -13,8 +13,10 @@
 
 """Helper macro to compile and test code samples."""
 
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
+
 def code_sample_cc(name):
-    native.cc_binary(
+    cc_binary(
         name = name + "_cc",
         srcs = [name + ".cc"],
         deps = [
@@ -25,7 +27,7 @@ def code_sample_cc(name):
         ],
     )
 
-    native.cc_test(
+    cc_test(
         name = name + "_cc_test",
         size = "small",
         srcs = [name + ".cc"],

ortools/linear_solver/samples/code_samples.bzl

@@ -14,10 +14,12 @@
 """Helper macro to compile and test code samples."""
 
 load("@pip_deps//:requirements.bzl", "requirement")
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
+load("@rules_java//java:defs.bzl", "java_test")
 load("@rules_python//python:defs.bzl", "py_binary", "py_test")
 
 def code_sample_cc(name):
-    native.cc_binary(
+    cc_binary(
         name = name + "_cc",
         srcs = [name + ".cc"],
         deps = [
@@ -28,7 +30,7 @@ def code_sample_cc(name):
         ],
     )
 
-    native.cc_test(
+    cc_test(
         name = name + "_cc_test",
         size = "small",
         srcs = [name + ".cc"],
@@ -78,7 +80,7 @@ def code_sample_py(name):
     )
 
 def code_sample_java(name):
-    native.java_test(
+    java_test(
         name = name + "_java_test",
         size = "small",
         srcs = [name + ".java"],