Revert "Build cache.img."

This reverts commit 531bdb546af5127ed9c1012871d780930eb990f5.
diff --git a/core/Makefile b/core/Makefile
index 62da48a..2aab143 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -613,7 +613,6 @@
 $(if $(INTERNAL_USERIMAGES_EXT_VARIANT),$(hide) echo "fs_type=$(INTERNAL_USERIMAGES_EXT_VARIANT)" >> $(1))
 $(if $(BOARD_SYSTEMIMAGE_PARTITION_SIZE),$(hide) echo "system_size=$(BOARD_SYSTEMIMAGE_PARTITION_SIZE)" >> $(1))
 $(if $(BOARD_USERDATAIMAGE_PARTITION_SIZE),$(hide) echo "userdata_size=$(BOARD_USERDATAIMAGE_PARTITION_SIZE)" >> $(1))
-$(if $(BOARD_CACHEIMAGE_PARTITION_SIZE),$(hide) echo "cache_size=$(BOARD_CACHEIMAGE_PARTITION_SIZE)" >> $(1))
 $(if $(INTERNAL_USERIMAGES_SPARSE_EXT_FLAG),$(hide) echo "extfs_sparse_flag=$(INTERNAL_USERIMAGES_SPARSE_EXT_FLAG)" >> $(1))
 $(if $(mkyaffs2_extra_flags),$(hide) echo "mkyaffs2_extra_flags=$(mkyaffs2_extra_flags)" >> $(1))
 endef
@@ -768,7 +767,7 @@
 endif
 
 systemimage_intermediates := \
-    $(call intermediates-dir-for,PACKAGING,systemimage)
+	$(call intermediates-dir-for,PACKAGING,systemimage)
 BUILT_SYSTEMIMAGE := $(systemimage_intermediates)/system.img
 
 # $(1): output file
@@ -878,10 +877,10 @@
 # -----------------------------------------------------------------
 # data partition image
 INTERNAL_USERDATAIMAGE_FILES := \
-    $(filter $(TARGET_OUT_DATA)/%,$(ALL_DEFAULT_INSTALLED_MODULES))
+	$(filter $(TARGET_OUT_DATA)/%,$(ALL_DEFAULT_INSTALLED_MODULES))
 
 userdataimage_intermediates := \
-    $(call intermediates-dir-for,PACKAGING,userdata)
+	$(call intermediates-dir-for,PACKAGING,userdata)
 BUILT_USERDATAIMAGE_TARGET := $(PRODUCT_OUT)/userdata.img
 
 define build-userdataimage-target
@@ -927,35 +926,6 @@
 
 
 # -----------------------------------------------------------------
-# cache partition image
-INTERNAL_CACHEIMAGE_FILES := \
-    $(filter $(TARGET_OUT_CACHE)/%,$(ALL_DEFAULT_INSTALLED_MODULES))
-
-cacheimage_intermediates := \
-    $(call intermediates-dir-for,PACKAGING,cache)
-BUILT_CACHEIMAGE_TARGET := $(PRODUCT_OUT)/cache.img
-
-define build-cacheimage-target
-  $(call pretty,"Target cache fs image: $(INSTALLED_CACHEIMAGE_TARGET)")
-  @mkdir -p $(TARGET_OUT_CACHE)
-  @mkdir -p $(cacheimage_intermediates) && rm -rf $(cacheimage_intermediates)/cache_image_info.txt
-  $(call generate-userimage-prop-dictionary, $(cacheimage_intermediates)/cache_image_info.txt)
-  $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
-      ./build/tools/releasetools/build_image.py \
-      $(TARGET_OUT_CACHE) $(cacheimage_intermediates)/cache_image_info.txt $(INSTALLED_CACHEIMAGE_TARGET)
-  $(hide) $(call assert-max-image-size,$(INSTALLED_CACHEIMAGE_TARGET),$(BOARD_CACHEIMAGE_PARTITION_SIZE),yaffs)
-endef
-
-# We just build this directly to the install location.
-INSTALLED_CACHEIMAGE_TARGET := $(BUILT_CACHEIMAGE_TARGET)
-$(INSTALLED_CACHEIMAGE_TARGET): $(INTERNAL_USERIMAGES_DEPS) $(INTERNAL_CACHEIMAGE_FILES)
-	$(build-cacheimage-target)
-
-.PHONY: cacheimage-nodeps
-cacheimage-nodeps: | $(INTERNAL_USERIMAGES_DEPS)
-	$(build-cacheimage-target)
-
-# -----------------------------------------------------------------
 # bring in the installer image generation defines if necessary
 ifeq ($(TARGET_USE_DISKINSTALLER),true)
 include bootable/diskinstaller/config.mk
@@ -1036,7 +1006,6 @@
 		$(INSTALLED_RECOVERYIMAGE_TARGET) \
 		$(INSTALLED_SYSTEMIMAGE) \
 		$(INSTALLED_USERDATAIMAGE_TARGET) \
-		$(INSTALLED_CACHEIMAGE_TARGET) \
 		$(INSTALLED_ANDROID_INFO_TXT_TARGET) \
 		$(built_ota_tools) \
 		$(APKCERTS_FILE) \