Remove obsolete BOARD_SEPOLICY_REPLACE / BOARD_SEPOLICY_IGNORE

Commit b4f17069 ("sepolicy:  Drop
BOARD_SEPOLICY_IGNORE/REPLACE support.", Mar 2015) made it a compile
time failure to use BOARD_SEPOLICY_REPLACE or BOARD_SEPOLICY_IGNORE.
As these restrictions have been in place since 2015, we can safely
assume all usages of this have been cleaned up, and there is no further
need to check for this.

8 lines deleted from Android.mk, 1720 lines to go.

Test: compiles.
Change-Id: I23249e4b2e9ec83cb6356a6c5a6e187ae1fc9744

Android.mk

@@ -11,14 +11,6 @@ POLICYVERS ?= 30
 MLS_SENS=1
 MLS_CATS=1024
 
-ifdef BOARD_SEPOLICY_REPLACE
-$(error BOARD_SEPOLICY_REPLACE is no longer supported; please remove from your BoardConfig.mk or other .mk file.)
-endif
-
-ifdef BOARD_SEPOLICY_IGNORE
-$(error BOARD_SEPOLICY_IGNORE is no longer supported; please remove from your BoardConfig.mk or other .mk file.)
-endif
-
 ifdef BOARD_SEPOLICY_UNION
 $(warning BOARD_SEPOLICY_UNION is no longer required - all files found in BOARD_SEPOLICY_DIRS are implicitly unioned; please remove from your BoardConfig.mk or other .mk file.)
 endif