ANDROID: do not trust plain abidiff report

The plain `abidiff` report sometimes contains ABI diffs which are not
reported by `abidiff --leaf-changes-only`.

It's highly likely that these diffs are due to only declared vs fully
defined type issues which we are ignoring for pragmatic reasons.

Given that we are moving away from using `abidiff` altogether, it
makes sense to ignore the outcome of plain `abidiff`. The report is
still generated unconditionally.

Bug: 228843807
Change-Id: I3a0fefb89df80341c66cc13e95f8b0bbeed60d2f
Signed-off-by: Giuliano Procida <gprocida@google.com>
diff --git a/abi/abitool.py b/abi/abitool.py
index 672e5ce..51ec047 100644
--- a/abi/abitool.py
+++ b/abi/abitool.py
@@ -489,8 +489,6 @@
         changed = []
         if abidiff_leaf_changed:
             changed.append(("abidiff (leaf changes)", abg_leaf))
-        if abidiff_full_changed:
-            changed.append(("abidiff (full)", abg_full))
         if stgdiff_changed:
             changed.append(("stgdiff", stg_small))
         if changed: