Unmark flash.sh as +x

/shakes fist at x20

Change-Id: Ia1ea3692f03e6f4a8ac8d0186bb2dfb41a95d703
diff --git a/kokoro/continuous.sh b/kokoro/continuous.sh
index fae3394..a6a17f8 100644
--- a/kokoro/continuous.sh
+++ b/kokoro/continuous.sh
@@ -28,6 +28,7 @@
 popd
 
 cp ${ROOTDIR}/build/flash.sh ${KOKORO_ARTIFACTS_DIR}
+chmod -x ${KOKORO_ARTIFACTS_DIR}/flash.sh
 cp ${PRODUCT_OUT}/u-boot.imx ${KOKORO_ARTIFACTS_DIR}
 cp ${PRODUCT_OUT}/boot.img ${KOKORO_ARTIFACTS_DIR}
 cp ${PRODUCT_OUT}/partition-table.img ${KOKORO_ARTIFACTS_DIR}