Revert "Run ktlintCheckFile task instead of python script in PREUPLOAD.cfg"

This reverts commit f6f042a5ec1ce4c75743014a60e422577feb2cfc.

Reason for revert: sometimes causing `repo upload` to hang

Change-Id: Ibba6df9392c851e6b409a694b7c3fbdd90673cb8
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 12fbb58..3cfaa1f 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -1,6 +1,6 @@
 [Hook Scripts]
 checkstyle_hook = ${REPO_ROOT}/prebuilts/checkstyle/checkstyle.py --sha ${PREUPLOAD_COMMIT} -c ${REPO_ROOT}/frameworks/support/development/checkstyle/config/support-lib.xml -p development/checkstyle/prebuilt/com.android.support.checkstyle.jar
-ktlint_hook = ${REPO_ROOT}/frameworks/support/gradlew -q -p ${REPO_ROOT}/frameworks/support --continue :ktlintCheckFile --args=${PREUPLOAD_FILES}
+ktlint_hook = ${REPO_ROOT}/prebuilts/ktlint/ktlint.py -f ${PREUPLOAD_FILES}
 invalid_suppress_hook = ${REPO_ROOT}/frameworks/support/development/checkInvalidSuppress.py ${PREUPLOAD_FILES}
 warn_check_api = ${REPO_ROOT}/frameworks/support/development/apilint.py -f ${PREUPLOAD_FILES}