Remove misc-include-cleaner suppression in util_tests.cpp

Author: aobolensk

.clang-tidy

@@ -89,4 +89,4 @@ CheckOptions:
   - key:             readability-function-cognitive-complexity.Threshold
     value:           20  # default: 25
   - key: misc-include-cleaner.IgnoreHeaders
-    value: '(opencv2/.*|__chrono/.*)'
+    value: '(opencv2/.*|__chrono/.*|_stdlib.h)'

modules/core/util/func_tests/util_tests.cpp

@@ -10,11 +10,11 @@ TEST(util_tests, check_unset_env) {
 #ifndef _WIN32
   int save_var = ppc::util::GetPPCNumThreads();
 
-  unsetenv("OMP_NUM_THREADS");  // NOLINT(misc-include-cleaner)
+  unsetenv("OMP_NUM_THREADS");
 
   EXPECT_EQ(ppc::util::GetPPCNumThreads(), 1);
 
-  setenv("OMP_NUM_THREADS", std::to_string(save_var).c_str(), 1);  // NOLINT(misc-include-cleaner)
+  setenv("OMP_NUM_THREADS", std::to_string(save_var).c_str(), 1);
 #else
   GTEST_SKIP();
 #endif
@@ -25,11 +25,11 @@ TEST(util_tests, check_set_env) {
   int save_var = ppc::util::GetPPCNumThreads();
 
   const int num_threads = static_cast<int>(std::thread::hardware_concurrency());
-  setenv("OMP_NUM_THREADS", std::to_string(num_threads).c_str(), 1);  // NOLINT(misc-include-cleaner)
+  setenv("OMP_NUM_THREADS", std::to_string(num_threads).c_str(), 1);
 
   EXPECT_EQ(ppc::util::GetPPCNumThreads(), num_threads);
 
-  setenv("OMP_NUM_THREADS", std::to_string(save_var).c_str(), 1);  // NOLINT(misc-include-cleaner)
+  setenv("OMP_NUM_THREADS", std::to_string(save_var).c_str(), 1);
 #else
   GTEST_SKIP();
 #endif