flash: retire unused eCos flash driver

even the AT91EB40a's flash is covered by CFI and nobody ever submitted
any other drivers based on eCos code. It's just possible that this
idea was missing documentation and "marketing", but it's in git if
somebody wants to resurrect it.

Change-Id: I66449aa6e0997301f9d67f28098789bfc891d6e9
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Reviewed-on: http://openocd.zylin.com/502
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>

src/flash/nor/drivers.c

@@ -37,7 +37,6 @@ extern struct flash_driver stm32f1x_flash;
 extern struct flash_driver stm32f2x_flash;
 extern struct flash_driver stm32lx_flash;
 extern struct flash_driver tms470_flash;
-extern struct flash_driver ecosflash_flash;
 extern struct flash_driver ocl_flash;
 extern struct flash_driver pic32mx_flash;
 extern struct flash_driver avr_flash;
@@ -69,7 +68,6 @@ static struct flash_driver *flash_drivers[] = {
 	&stm32f2x_flash,
 	&stm32lx_flash,
 	&tms470_flash,
-	&ecosflash_flash,
 	&ocl_flash,
 	&pic32mx_flash,
 	&avr_flash,