remove mbed namespace from h file and update test

components/storage/blockdevice/COMPONENT_QSPIF/QSPIFBlockDevice.h

@@ -19,8 +19,6 @@
 #include "QSPI.h"
 #include "BlockDevice.h"
 
-namespace mbed {
-
 /** Enum qspif standard error codes
  *
  *  @enum qspif_bd_error
@@ -349,5 +347,4 @@ private:
     bool _is_initialized;
 };
 
-} //namespace mbed
 #endif

components/storage/blockdevice/COMPONENT_QSPIF/TESTS/block_device/qspif/main.cpp

@@ -18,6 +18,7 @@
 #include "utest.h"
 #include "QSPIFBlockDevice.h"
 #include "mbed_trace.h"
+#include "rtos/Thread.h"
 #include <stdlib.h>
 
 using namespace utest::v1;