plat: imx8mm: cleanup platform.mk

cleanup XLAT and STACK defines
the OCRAM size for ATF is big enough for i.MX 8mm
there is no need to move code to OCRAM_S

Signed-off-by: Silvano di Ninno <silvano.dininno@nxp.com>
Acked-by: Jacky Bai <ping.bai@nxp.com>
(cherry picked from commit b21783f0968e2c17de59956d8bb59dd7ca133b7c)
diff --git a/plat/imx/imx8mm/platform.mk b/plat/imx/imx8mm/platform.mk
index fa26fc4..25b86f8 100644
--- a/plat/imx/imx8mm/platform.mk
+++ b/plat/imx/imx8mm/platform.mk
@@ -33,10 +33,8 @@
 MULTI_CONSOLE_API	:=	1
 RESET_TO_BL31		:=	1
 ERROR_DEPRECATED	:=	1
-#XLAT_TABLE_IN_OCRAM_S	:=	1
-#STACK_IN_OCRAM_S       :=      1
+
 ifneq (${SPD},none)
 $(eval $(call add_define,TEE_IMX8))
 endif
-#$(eval $(call add_define,XLAT_TABLE_IN_OCRAM_S))
-#$(eval $(call add_define,STACK_IN_OCRAM_S))
+