Fix the CI build and unit test issue

Author: rajkan01

UNITTESTS/features/cellular/framework/device/athandler/athandlertest.cpp

@@ -25,7 +25,6 @@
 #include "mbed_poll_stub.h"
 #include "CellularUtil_stub.h"
 
-#include "Timer_stub.h"
 
 using namespace mbed;
 using namespace events;
@@ -228,7 +227,6 @@ TEST_F(TestATHandler, test_ATHandler_process_oob)
     at.process_oob();
 
     at.clear_error();
-    timer_stub_value = 0;
     filehandle_stub_table_pos = 0;
     at.read_bytes(buf, 5);
 
@@ -244,7 +242,6 @@ TEST_F(TestATHandler, test_ATHandler_process_oob)
     filehandle_stub_table = table2;
 
     at.clear_error();
-    timer_stub_value = 0;
     filehandle_stub_table_pos = 0;
     mbed_poll_stub::revents_value = POLLIN;
     mbed_poll_stub::int_value = 1;

UNITTESTS/features/cellular/framework/device/athandler/unittest.cmake

@@ -28,7 +28,6 @@ set(unittest-test-sources
   stubs/SerialBase_stub.cpp
   stubs/mbed_assert_stub.cpp
   stubs/mbed_poll_stub.cpp
-  stubs/Timer_stub.cpp
   stubs/equeue_stub.c
   stubs/Kernel_stub.cpp
   stubs/ThisThread_stub.cpp

UNITTESTS/platform/ATCmdParser/test_ATCmdParser.cpp

@@ -23,7 +23,6 @@
 #include <stdarg.h>
 #include "FileHandle_stub.h"
 #include "mbed_poll_stub.h"
-#include "Timer_stub.h"
 
 using namespace mbed;
 
@@ -110,7 +109,6 @@ TEST_F(test_ATCmdParser, test_ATCmdParser_process_oob)
     at.process_oob();
     expected_oob_callback = false;
 
-    timer_stub_value = 0;
     filehandle_stub_table_pos = 0;
     at.read(buf, 5);
 
@@ -127,7 +125,6 @@ TEST_F(test_ATCmdParser, test_ATCmdParser_process_oob)
     table2[4] = 0;
     filehandle_stub_table = table2;
 
-    timer_stub_value = 0;
     filehandle_stub_table_pos = 0;
     mbed_poll_stub::revents_value = POLLIN;
     mbed_poll_stub::int_value = 1;

UNITTESTS/stubs/Timer_stub.cpp

@@ -97,9 +97,6 @@ class Timeout : public TimeoutBase {
     /** Clock to use with attach_absolute, guaranteeing running only while attached or manually locked */
     using clock = HighResClock;
 
-    /** Clock to use with attach_absolute, running always */
-    using steady_clock = SteadyHighResClock;
-
     /** @copydoc TimeoutBase::scheduled_time() */
     HighResClock::time_point scheduled_time() const
     {

UNITTESTS/stubs/Timer_stub.h

@@ -44,9 +44,7 @@ Timeout::Timeout() : TimeoutBase(get_us_ticker_data(), true)
  * (In C++17 could avoid the need for this by making the members inline).
  */
 const bool HighResClock::is_steady;
-const bool SteadyHighResClock::is_steady;
 const bool LowPowerClock::is_steady;
-mstd::once_flag SteadyHighResClock::init;
 const bool RealTimeClock::is_steady;
 
 #if DEVICE_LPTICKER

drivers/Timeout.h

@@ -28,6 +28,7 @@
 #include "rtos/mbed_rtos_types.h"
 #include "rtos/Mutex.h"
 #include "rtos/Semaphore.h"
+#include "rtos/Kernel.h"
 
 #include "platform/NonCopyable.h"