mtd: drop .write() function

All MTD drivers should now implement the .write_page() function instead.

drivers/include/mtd.h

@@ -250,25 +250,6 @@ struct mtd_desc {
                      uint32_t offset,
                      uint32_t size);
 
-    /**
-     * @brief   Write to the Memory Technology Device (MTD)
-     *
-     * @p addr + @p size must be inside a page boundary. @p addr can be anywhere
-     * but the buffer cannot overlap two pages.
-     *
-     * @param[in] dev       Pointer to the selected driver
-     * @param[in] buff      Pointer to the data to be written
-     * @param[in] addr      Starting address
-     * @param[in] size      Number of bytes
-     *
-     * @retval 0 on success
-     * @retval <0 value on error
-     */
-    int (*write)(mtd_dev_t *dev,
-                 const void *buff,
-                 uint32_t addr,
-                 uint32_t size);
-
     /**
      * @brief   Write to the Memory Technology Device (MTD) using
      *          pagewise addressing.

drivers/mtd/mtd.c

@@ -169,14 +169,6 @@ int mtd_write(mtd_dev_t *mtd, const void *src, uint32_t addr, uint32_t count)
         return -ENODEV;
     }
 
-    if (out_of_bounds(mtd, 0, addr, count)) {
-        return -EOVERFLOW;
-    }
-
-    if (mtd->driver->write) {
-        return mtd->driver->write(mtd, src, addr, count);
-    }
-
     /* page size is always a power of two */
     const uint32_t page_shift = bitarithm_msb(mtd->page_size);
     const uint32_t page_mask = mtd->page_size - 1;
@@ -296,15 +288,6 @@ int mtd_write_page_raw(mtd_dev_t *mtd, const void *src, uint32_t page, uint32_t
         return -EOVERFLOW;
     }
 
-    if (mtd->driver->write_page == NULL) {
-        /* TODO: remove when all backends implement write_page */
-        if (mtd->driver->write) {
-            return mtd->driver->write(mtd, src, mtd->page_size * page + offset, count);
-        } else {
-            return -ENOTSUP;
-        }
-    }
-
     /* Implementation assumes page size is <= INT_MAX and a power of two. */
     /* We didn't find hardware yet where this is not true.                */
     assert(mtd->page_size <= INT_MAX);