ci: Disable some of the Android jobs

Unfortunately the Android jobs have had very high rates of spurious
failure, especially recently; the chance that one of the Android jobs
fails a CI run is about 40% for the past month. This does not seem to be
a trivial problem to solve so for now, disable two of the jobs to reduce
the chance that other merges get rejected from a spurious failure.

Aarch64 is kept as the most important target, as is x86_64 which does
not seem to experience these failures.

Relevant issue: #4297

Author: tgross35

.github/workflows/ci.yaml

@@ -175,9 +175,11 @@ jobs:
           - aarch64-linux-android
           - aarch64-unknown-linux-gnu
           - aarch64-unknown-linux-musl
-          - arm-linux-androideabi
+          # FIXME(#4297): Some android jobs are disabled because of high rates of
+          # spurious failures.
+          # - arm-linux-androideabi
           - arm-unknown-linux-musleabihf
-          - i686-linux-android
+          # - i686-linux-android
           - i686-unknown-linux-musl
           - loongarch64-unknown-linux-gnu
           - loongarch64-unknown-linux-musl