cpu: msp430-common: remove obsolete hwtimer support

cpu/msp430-common/include/hwtimer_cpu.h

@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2014 INRIA
- *               2014, 2015 Freie Universität Berlin
- *
- * This file is subject to the terms and conditions of the GNU Lesser
- * General Public License v2.1. See the file LICENSE in the top level
- * directory for more details.
- */
-
-/**
- * @ingroup     cpu_msp430-common
- * @{
- *
- * @file
- * @brief       Hardware timer configuration for MSP430 based CPUs
- *
- * @author      Oliver Hahm <oliver.hahm@inria.fr>
- * @author      Kévin Roussel <Kevin.Roussel@inria.fr>
- * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
- *
- */
-
-#ifndef HWTIMER_CPU_H_
-#define HWTIMER_CPU_H_
-
-#include "board.h"
-#include "periph_conf.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @brief   Hardware timer configuration
- * @{
- */
-#define HWTIMER_MAXTIMERS       (TIMER_CHAN)
-#define HWTIMER_SPEED           (F_RC_OSCILLATOR)
-#define HWTIMER_MAXTICKS        (0x0000FFFF)
-/** @} */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* HWTIMER_CPU_H_ */