Revert "cpu/msp430_common: extend flashpage API"

This reverts commit 741943f021.

cpu/msp430/ldscripts/msp430_common.ld

@@ -6,21 +6,6 @@
  * directory for more details.
  */
 
-SECTIONS
-{
-    /* Populate information about rom size */
-    _srom = ORIGIN(ROM);
-    _erom = ORIGIN(ROM) + LENGTH(ROM);
-
-    .flash_writable (NOLOAD) : {
-        KEEP(*(SORT(.flash_writable.*)))
-    } > ROM
-
-    .end_fw (NOLOAD) : ALIGN(4) {
-        _end_fw = . ;
-    } > ROM
-}
-
 /* provide address for register maps by taking the address of the first
  * register (as provided by the vendor files) */
 

cpu/msp430/periph/flashpage.c

@@ -26,13 +26,6 @@
 #include "irq.h"
 #include "periph/flashpage.h"
 
-/**
- * @brief   Memory markers, defined in the linker script
- * @{
- */
-extern uint32_t _end_fw;
-extern uint32_t _erom;
-
 static inline int _unlock(void)
 {
     int state;
@@ -104,15 +97,3 @@ void flashpage_write(void *target_addr, const void *data, size_t len)
     /* lock flash and re-enable interrupts */
     _lock(state);
 }
-
-unsigned flashpage_first_free(void)
-{
-    return flashpage_page(&_end_fw) + 1;
-}
-
-/* MSP430 cpu's last page holds the interrupt vector, so flashpage_last_free
-   is the one before last */
-unsigned flashpage_last_free(void)
-{
-    return flashpage_page(&_erom) - 1;
-}