stm32/boards/stm32h743.ld: Remove include of common.ld.

The relevant common.ld file should now be included explicitly by a
particular board.

ports/stm32/boards/stm32h743.ld

@@ -22,9 +22,6 @@ _minimum_heap_size = 16K;
    aligned for a call. */
 _estack = ORIGIN(RAM) + LENGTH(RAM);
 
-/* define common sections and symbols */
-INCLUDE common.ld
-
 /* RAM extents for the garbage collector */
 _ram_start = ORIGIN(RAM);
 _ram_end = ORIGIN(RAM) + LENGTH(RAM);