pmc405de and zeus: remove the env_ptr externs

The env_ptr is already declared in environment.h, so there is no need to
redeclare in board files (especially after including the environment.h)
Remove those declarations.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Matthias Fuchs <matthias.fuchs@esd.eu>

board/esd/pmc405de/pmc405de.c

@@ -415,7 +415,6 @@ U_BOOT_CMD(eepwren, 2, 0, do_eep_wren,
 
 #if defined(CONFIG_PRAM)
 #include <environment.h>
-extern env_t *env_ptr;
 
 int do_painit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {

board/zeus/zeus.c

@@ -39,7 +39,6 @@ DECLARE_GLOBAL_DATA_PTR;
 #define REBOOT_DO_POST	0x00000001
 
 extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
-extern env_t *env_ptr;
 
 ulong flash_get_size(ulong base, int banknum);
 void env_crc_update(void);