Clean up deprecations (#504)

* Adjust deprecation versions.

* Remove redirects that are already made in ansible/ansible's ansible_builtin_runtime.yml

* Remove modules that were moved to the google.cloud collection according to ansible/ansible's ansible_builtin_runtime.yml.

* The _info module is in google.cloud.

* The gcp doc_fragment is a copy of the one in google.cloud and is only used by one lookup. Mark as deprecated/internal.

* Remove entries of modules that no longer exist.

* Update ignore.txt.

* Try to fix test.

* Remove debug output.

tests/unit/plugins/modules/cloud/google/test_gcp_forwarding_rule.py

@@ -1,30 +0,0 @@
-import unittest
-
-from ansible_collections.community.general.plugins.modules.cloud.google.gcp_forwarding_rule import _build_global_forwarding_rule_dict
-
-
-class TestGCPFowardingRule(unittest.TestCase):
-    """Unit tests for gcp_fowarding_rule module."""
-    params_dict = {
-        'forwarding_rule_name': 'foo_fowarding_rule_name',
-        'address': 'foo_external_address',
-        'target': 'foo_targetproxy',
-        'region': 'global',
-        'port_range': 80,
-        'protocol': 'TCP',
-        'state': 'present',
-    }
-
-    def test__build_global_forwarding_rule_dict(self):
-
-        expected = {
-            'name': 'foo_fowarding_rule_name',
-            'IPAddress': 'https://www.googleapis.com/compute/v1/projects/my-project/global/addresses/foo_external_address',
-            'target': 'https://www.googleapis.com/compute/v1/projects/my-project/global/targetHttpProxies/foo_targetproxy',
-            'region': 'global',
-            'portRange': 80,
-            'IPProtocol': 'TCP',
-        }
-        actual = _build_global_forwarding_rule_dict(
-            self.params_dict, 'my-project')
-        self.assertEqual(expected, actual)