Revert "Platform: Add required header file and namespace element instead add all"

This reverts commit d7795e8.
Going to 5.11

Author: adbridge

platform/ATCmdParser.cpp

@@ -39,8 +39,6 @@
 #define CR  13
 #endif
 
-namespace mbed {
-
 // getc/putc handling with timeouts
 int ATCmdParser::putc(char c)
 {
@@ -400,5 +398,4 @@ bool ATCmdParser::process_oob()
     return _oob_cb_count != pre_count;
 }
 
-}
 

platform/ATCmdParser.h

@@ -20,10 +20,9 @@
 #ifndef MBED_ATCMDPARSER_H
 #define MBED_ATCMDPARSER_H
 
+#include "mbed.h"
 #include <cstdarg>
 #include "Callback.h"
-#include "NonCopyable.h"
-#include "FileHandle.h"
 
 namespace mbed {
 

platform/FileSystemHandle.cpp

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
+#include "mbed.h"
 #include "FileSystemHandle.h"
 #include <errno.h>
 
-namespace mbed {
 int FileSystemHandle::open(DirHandle **dir, const char *path)
 {
     return -ENOSYS;
@@ -47,4 +47,3 @@ int FileSystemHandle::statvfs(const char *path, struct statvfs *buf)
 {
     return -ENOSYS;
 }
-}

platform/mbed_wait_api_rtos.cpp

@@ -20,7 +20,7 @@
 
 #include "platform/mbed_wait_api.h"
 #include "hal/us_ticker_api.h"
-#include "rtos/ThisThread.h"
+#include "rtos/rtos.h"
 #include "platform/mbed_critical.h"
 #include "platform/mbed_power_mgmt.h"