Revert "Fix signing failure for split APKs"

This reverts commit 6871779d9b.

Reason for revert: Potential culprit for b/356752725- verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Change-Id: I4c29b27f0318901130036dbe8ab9edef37f08875

tools/releasetools/common.py

@@ -2434,23 +2434,12 @@ def GetMinSdkVersion(apk_name):
         "Failed to obtain minSdkVersion for {}: aapt2 return code {}:\n{}\n{}".format(
             apk_name, proc.returncode, stdoutdata, stderrdata))
 
-  is_split_apk = False
   for line in stdoutdata.split("\n"):
-    # See b/353837347 , split APKs do not have sdk version defined,
-    # so we default to 21 as split APKs are only supported since SDK
-    # 21.
-    if (re.search(r"split=[\"'].*[\"']", line)):
-      is_split_apk = True
     # Due to ag/24161708, looking for lines such as minSdkVersion:'23',minSdkVersion:'M'
     # or sdkVersion:'23', sdkVersion:'M'.
     m = re.match(r'(?:minSdkVersion|sdkVersion):\'([^\']*)\'', line)
     if m:
       return m.group(1)
-  if is_split_apk:
-    logger.info("%s is a split APK, it does not have minimum SDK version"
-                " defined. Defaulting to 21 because split APK isn't supported"
-                " before that.", apk_name)
-    return 21
   raise ExternalError("No minSdkVersion returned by aapt2 for apk: {}".format(apk_name))