Revert "Update fetch_cvd version to have artifact list file."

This reverts commit 74bbacbd5d34f52bf06821ad8e9d2e8995ec3488.

Reason for revert: New fetch_cvd version would cause AVD boot timeout.

Bug: 182328055

Change-Id: I385191cffdc8c997a210148662a9aa642e3934ca
Test: acloud-dev create --branch ks_qcom-s-keystone-qcom-release --build-target cuttlestone_x86_64_phone-userdebug
diff --git a/internal/lib/android_build_client.py b/internal/lib/android_build_client.py
index 58f88a7..847ed1e 100644
--- a/internal/lib/android_build_client.py
+++ b/internal/lib/android_build_client.py
@@ -65,7 +65,7 @@
     LATEST = "latest"
     # FETCH_CVD variables.
     FETCHER_NAME = "fetch_cvd"
-    FETCHER_BUILD_TARGET = "aosp_cf_x86_64_phone-userdebug"
+    FETCHER_BUILD_TARGET = "aosp_cf_x86_phone-userdebug"
     MAX_RETRY = 3
     RETRY_SLEEP_SECS = 3
 
diff --git a/public/data/default.config b/public/data/default.config
index 290d27c..2016519 100644
--- a/public/data/default.config
+++ b/public/data/default.config
@@ -18,7 +18,7 @@
   network: "default"
   extra_data_disk_size_gb: 0
   instance_name_pattern: "ins-{uuid}-{build_id}-{build_target}"
-  fetch_cvd_version: "7156322"
+  fetch_cvd_version: "6904202"
 
   metadata_variable {
     key: "camera_front"