integrity: remove pointless subdir-$(CONFIG_...)

The ima/ and evm/ sub-directories contain built-in objects, so
obj-$(CONFIG_...) is the correct way to descend into them.

subdir-$(CONFIG_...) is redundant.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

security/integrity/Makefile

@@ -14,7 +14,5 @@ integrity-$(CONFIG_LOAD_UEFI_KEYS) += platform_certs/efi_parser.o \
 					platform_certs/load_uefi.o
 integrity-$(CONFIG_LOAD_IPL_KEYS) += platform_certs/load_ipl_s390.o
 
-subdir-$(CONFIG_IMA)			+= ima
 obj-$(CONFIG_IMA)			+= ima/
-subdir-$(CONFIG_EVM)			+= evm
 obj-$(CONFIG_EVM)			+= evm/