Remove unnecessary code.

- There is not need to capture stream anymore.
- This may hide potential problems.

Change-Id: I0fdb3752ef7684a95aaf8e29b2c4394722ff0aa3

unit_tests/os_interface/linux/drm_buffer_object_tests.cpp

@@ -108,11 +108,9 @@ TEST_F(DrmBufferObjectTest, givenDrmWithCoherencyPatchActiveWhenExecIsCalledWith
 }
 
 TEST_F(DrmBufferObjectTest, exec_ioctlFailed) {
-    testing::internal::CaptureStderr();
     mock->ioctl_expected = 1;
     mock->ioctl_res = -1;
     EXPECT_THROW(bo->exec(0, 0, 0), std::exception);
-    testing::internal::GetCapturedStderr();
 }
 
 TEST_F(DrmBufferObjectTest, setTiling_success) {
@@ -194,7 +192,6 @@ TEST_F(DrmBufferObjectTest, onPinBBhasOnlyBbEndAndNoForceNonCoherent) {
 TEST_F(DrmBufferObjectTest, onPinIoctlFailed) {
     std::unique_ptr<uint32_t[]> buff(new uint32_t[1024]);
 
-    testing::internal::CaptureStderr();
     mock->ioctl_expected = 1;
     mock->ioctl_res = -1;
 
@@ -204,6 +201,4 @@ TEST_F(DrmBufferObjectTest, onPinIoctlFailed) {
     bo->setAddress(buff.get());
     auto ret = bo->pin(boToPin.get());
     EXPECT_EQ(mock->ioctl_res, ret);
-
-    testing::internal::GetCapturedStderr();
 }

unit_tests/os_interface/linux/drm_command_stream_tests.cpp

@@ -59,7 +59,6 @@ class DrmCommandStreamFixture {
     void SetUp() {
         //gmock
         MemoryManagement::fastLeaksDetectionMode = MemoryManagement::LeakDetectionMode::TURN_OFF_LEAK_DETECTION;
-        stderrCaptured = false;
 
         this->dbgState = new DebugManagerStateRestore();
         //make sure this is disabled, we don't want test this now
@@ -80,10 +79,7 @@ class DrmCommandStreamFixture {
         delete this->mock;
         this->mock = 0;
         delete dbgState;
-        if (stderrCaptured)
-            testing::internal::GetCapturedStderr();
     }
-    bool stderrCaptured = false;
     static const uint64_t alignment = MemoryConstants::allocationAlignment;
     DebugManagerStateRestore *dbgState;
 };
@@ -466,9 +462,6 @@ TEST_F(DrmCommandStreamTest, GIVENCSRWHENgetDMTHENNotNull) {
 }
 
 TEST_F(DrmCommandStreamTest, CheckDrmFreeCloseFailed) {
-    testing::internal::CaptureStderr();
-    stderrCaptured = true;
-
     EXPECT_CALL(*mock, ioctl(DRM_IOCTL_I915_GEM_USERPTR, ::testing::_))
         .Times(1)
         .WillOnce(::testing::DoAll(UserptrSetHandle(17), ::testing::Return(0)));

unit_tests/os_interface/linux/drm_memory_manager_tests.cpp

@@ -493,7 +493,6 @@ TEST_F(DrmMemoryManagerTest, getMinimumSystemSharedMemory) {
 }
 
 TEST_F(DrmMemoryManagerTest, BoWaitFailure) {
-    testing::internal::CaptureStderr();
     mock->ioctl_expected = 3; //create+wait+close
     BufferObject *bo = memoryManager->allocUserptr(0, (size_t)1024, 0ul, true);
     ASSERT_NE(nullptr, bo);
@@ -502,7 +501,6 @@ TEST_F(DrmMemoryManagerTest, BoWaitFailure) {
     mock->ioctl_res = 1;
 
     memoryManager->unreference(bo);
-    testing::internal::GetCapturedStderr();
 }
 
 TEST_F(DrmMemoryManagerTest, NullOsHandleStorageAskedForPopulationReturnsFilledPointer) {