Merge bitcoin/bitcoin#26380: Revert "test: check importing wallets when blocks are pruned throw an error"

e1eadaa Revert "test: check importing wallets when blocks are pruned throw an error" (Aurèle Oulès)

Pull request description:

  The test doesn't pass (not detected by the normal CI, because it is an extended test):

  ```
  Traceback (most recent call last):
    File "/tmp/cirrus-ci-build/bitcoin-core/test/functional/test_framework/test_framework.py", line 133, in main
      self.run_test()
    File "/tmp/cirrus-ci-build/bitcoin-core/test/functional/feature_pruning.py", line 480, in run_test
      self.wallet_test()
    File "/tmp/cirrus-ci-build/bitcoin-core/test/functional/feature_pruning.py", line 361, in wallet_test
      assert_raises_rpc_error(-4, "Importing wallets is disabled when blocks are pruned", self.nodes[2].importwallet, "abc")
    File "/tmp/cirrus-ci-build/bitcoin-core/test/functional/test_framework/util.py", line 130, in assert_raises_rpc_error
      assert try_rpc(code, message, fun, *args, **kwds), "No exception raised"
    File "/tmp/cirrus-ci-build/bitcoin-core/test/functional/test_framework/util.py", line 145, in try_rpc
      raise AssertionError(
  AssertionError: Expected substring not found in error message:
  substring: 'Importing wallets is disabled when blocks are pruned'
  error message: 'Only legacy wallets are supported by this command'.
  ```

  So revert it for now, which will be done anyway in https://github.com/bitcoin/bitcoin/pull/24865/commits. (This commit is taken from there)

ACKs for top commit:
  andrewtoth:
    ACK e1eadaa

Tree-SHA512: 10f556ea1aa97dc9cb64f91055977eecb9534f658170aabb4909c3e85ca6c20588c7a021219356fab678e0e2bec999d347facd00054f07a9445ad393e6353b4c

Author: MacroFake

test/functional/feature_pruning.py

@@ -358,8 +358,6 @@ def wallet_test(self):
         self.restart_node(2, extra_args=["-prune=550"])
         self.log.info("Success")
 
-        assert_raises_rpc_error(-4, "Importing wallets is disabled when blocks are pruned", self.nodes[2].importwallet, "abc")
-
         # check that wallet loads successfully when restarting a pruned node after IBD.
         # this was reported to fail in #7494.
         self.log.info("Syncing node 5 to test wallet")