Revert "Sign APKs using SHA-256 instead of SHA-1 when possible."

This reverts commit 74df828cb574a6f30be9b9dcf286773ca1835f72. This commit is breaking a build, again...

Change-Id: I2df561d68302ba4c83e90a64a7bf203645033a3b
diff --git a/core/definitions.mk b/core/definitions.mk
index 5de3313..78b607b 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2246,21 +2246,11 @@
 fi
 endef
 
-# Returns the minSdkVersion of the specified APK as a decimal number. If the
-# version is a codename, returns the current platform SDK version (always a
-# decimal number) instead.
-#
-define get-package-min-sdk-version-int
-$$($(AAPT) dump badging $(1) 2>&1 | grep '^sdkVersion' | cut -d"'" -f2 | \
-    sed -e s/^$(PLATFORM_VERSION_CODENAME)$$/$(PLATFORM_SDK_VERSION)/)
-endef
-
 # Sign a package using the specified key/cert.
 #
 define sign-package
 $(hide) mv $@ $@.unsigned
 $(hide) java -Djava.library.path=$(SIGNAPK_JNI_LIBRARY_PATH) -jar $(SIGNAPK_JAR) \
-    --min-sdk-version $(call get-package-min-sdk-version-int,$@.unsigned) \
     $(PRIVATE_CERTIFICATE) $(PRIVATE_PRIVATE_KEY) \
     $(PRIVATE_ADDITIONAL_CERTIFICATES) $@.unsigned $@.signed
 $(hide) mv $@.signed $@
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index 225082b..601a79c 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -213,7 +213,7 @@
 endif
 $(built_module): PRIVATE_EMBEDDED_JNI_LIBS := $(embedded_prebuilt_jni_libs)
 
-$(built_module) : $(my_prebuilt_src_file) | $(ACP) $(ZIPALIGN) $(SIGNAPK_JAR) $(AAPT)
+$(built_module) : $(my_prebuilt_src_file) | $(ACP) $(ZIPALIGN) $(SIGNAPK_JAR)
 	$(transform-prebuilt-to-target)
 	$(uncompress-shared-libs)
 ifneq ($(LOCAL_CERTIFICATE),PRESIGNED)
@@ -252,7 +252,7 @@
 
 $(built_apk_splits) : PRIVATE_PRIVATE_KEY := $(LOCAL_CERTIFICATE).pk8
 $(built_apk_splits) : PRIVATE_CERTIFICATE := $(LOCAL_CERTIFICATE).x509.pem
-$(built_apk_splits) : $(built_module_path)/%.apk : $(my_src_dir)/%.apk | $(ACP) $(AAPT)
+$(built_apk_splits) : $(built_module_path)/%.apk : $(my_src_dir)/%.apk | $(ACP)
 	$(copy-file-to-new-target)
 	$(sign-package)