Reverts "Update Zulip tests and re-enable (#441)" (#444)

Reverts: #441
Initiated by: matanlurey
Reason for reverting: sudo apt-get install does not work on LUCI
Original PR Author: gnprice

Reviewed By: {Piinks}

This change reverts the following previous change:
This has the update to unblock autocomplete changes:
  zulip/zulip-flutter#1190
  flutter/flutter#143249

and with that, tests pass again on Flutter main.

Also install libsqlite3-dev on Linux, a package which is no longer
included in GitHub's new version of the "ubuntu-latest" images.  The
lack of it causes nondeterministic failures when the runner happens
to use the new image:
  #441 (comment)

The actual shared library file libsqlite3.so.0.8.6 -- in the package
libsqlite3-0 -- is still installed by default anyway.  This package
adds the symlink at "libsqlite3.so", which is the filename some
libraries apparently look for.

Author: auto-submit[bot]

registry/zulip.test registry/zulip.test.disabled

@@ -2,9 +2,7 @@ [email protected]
 [email protected]
 
 fetch=git clone https://github.com/zulip/zulip-flutter.git tests
-fetch=git -C tests checkout 0bfa79d23fc9fcf5ce0cc5a21540434f526838d9
-
-setup.linux=sudo apt install -y libsqlite3-dev
+fetch=git -C tests checkout 28b3536bc81b6665a6014ce72f40c51f83b0c5c4
 
 update=.
 update=packages/zulip_plugin