Disable sccache in CI (#34692)

We have been having intermittent issues with sccache since
around the recent v0.9 release of sccache which only
appear when building mozjs from source.
Due to recent changes with readablestreams, we are not using
the prebuilt mozjs artifacts anymore and always building from
source, causing these problems to regularly block the merge
queue. Bumping SCCACHE_GHA_VERSION helps but has been observed
to only be a temporary solution until the next breakage.

Closes #34571

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>

.github/workflows/android.yml

@@ -24,11 +24,6 @@ on:
 env:
   RUST_BACKTRACE: 1
   SHELL: /bin/bash
-  SCCACHE_GHA_ENABLED: "true"
-  RUSTC_WRAPPER: "sccache"
-  CCACHE: "sccache"
-  # Increment this to purge the cache (https://github.com/mozilla/sccache/blob/main/docs/GHA.md)
-  SCCACHE_GHA_VERSION: 3
   CARGO_INCREMENTAL: 0
 
 jobs:
@@ -57,8 +52,6 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 2
-      - name: Run sccache-cache
-        uses: mozilla-actions/sccache-action@v0.0.7
       - name: Install crown
         run: cargo install --path support/crown
       - name: Setup Python