Stop supporting wrapping the build with `make`

The build servers are no longer using this. It's hard to search for
others using it -- I've cleaned them up as I've run across them, but
we'll just have to see who breaks once this goes in.

This was the last user of makeparallel, so we can remove it.

Test: make
Test: treehugger
Change-Id: If6df3f1a67d6a6df36afaa4b07cd88a48a364fe1
diff --git a/core/ninja_config.mk b/core/ninja_config.mk
index 85a7568..776fc7e 100644
--- a/core/ninja_config.mk
+++ b/core/ninja_config.mk
@@ -55,7 +55,7 @@
 include $(wildcard vendor/*/build/ninja_config.mk)
 
 # Any Android goals that need to be built.
-ANDROID_GOALS := $(filter-out $(KATI_OUTPUT_PATTERNS) $(CKATI) $(MAKEPARALLEL),\
+ANDROID_GOALS := $(filter-out $(KATI_OUTPUT_PATTERNS),\
     $(sort $(ORIGINAL_MAKECMDGOALS) $(MAKECMDGOALS)))
 # Goals we need to pass to Ninja.
 NINJA_GOALS := $(filter-out $(NINJA_EXCLUDE_GOALS), $(ANDROID_GOALS))