Merge pull request #20995 from mpashchenkov:mp/ocv-gapi-tdp-skip

G-API: Removing G-API test code that is a reflection of ts module

* gapi: don't hijack testing infrastructure

* Removed initDataPath functionality (ts module exists)

* Removed false for ocv_extra data from findDataFile

Co-authored-by: Alexander Alekhin <alexander.a.alekhin@gmail.com>

modules/gapi/test/cpu/gapi_ocv_stateful_kernel_tests.cpp

@@ -43,22 +43,6 @@ namespace opencv_test
 //----------------------------------------------- Simple tests ------------------------------------------------
 namespace
 {
-    inline void initTestDataPath()
-    {
-#ifndef WINRT
-        static bool initialized = false;
-        if (!initialized)
-        {
-            // Since G-API has no own test data (yet), it is taken from the common space
-            const char* testDataPath = getenv("OPENCV_TEST_DATA_PATH");
-            if (testDataPath) {
-                cvtest::addDataSearchPath(testDataPath);
-            }
-            initialized = true;
-        }
-#endif // WINRT
-    }
-
     G_TYPED_KERNEL(GCountCalls, <cv::GOpaque<int>(GMat)>, "org.opencv.test.count_calls")
     {
         static GOpaqueDesc outMeta(GMatDesc /* in */) { return empty_gopaque_desc(); }
@@ -181,8 +165,6 @@ TEST(StatefulKernel, StateIsMutableInRuntime)
 
 TEST(StatefulKernel, StateIsAutoResetForNewStream)
 {
-    initTestDataPath();
-
     cv::GMat in;
     cv::GOpaque<bool> out = GIsStateUpToDate::on(in);
     cv::GComputation c(cv::GIn(in), cv::GOut(out));
@@ -329,8 +311,6 @@ namespace
 
 TEST(StatefulKernel, StateIsInitViaCompArgsInStreaming)
 {
-    initTestDataPath();
-
     // G-API graph declaration
     cv::GMat in;
     cv::GMat out = GBackSub::on(in);