Don't validate W2001 when using Transform (#3501)

src/cfnlint/__init__.py

@@ -6,7 +6,7 @@
 import logging
 
 from cfnlint.api import lint, lint_all
-from cfnlint.config import ConfigMixIn
+from cfnlint.config import ConfigMixIn, ManualArgs
 from cfnlint.rules import Rules
 from cfnlint.template import Template
 from cfnlint.template.transforms import Transform

src/cfnlint/rules/parameters/Used.py

@@ -20,6 +20,8 @@ class Used(CloudFormationLintRule):
     tags = ["parameters"]
 
     def match(self, cfn: Template) -> RuleMatches:
+        if cfn.transform_pre["Transform"]:
+            return []
         matches: RuleMatches = []
 
         le_refs = None

test/fixtures/templates/good/parameters/not_used_parameters.yaml

@@ -0,0 +1,26 @@
+AWSTemplateFormatVersion: '2010-09-09'
+Transform: 'AWS::Serverless-2016-10-31'
+Parameters:
+  Version:
+    Type: String
+
+Resources:
+  SomeLambda:
+    Type: 'AWS::Serverless::Function'
+    Properties:
+      Handler: com.SomeLambda::handleRequest
+      Runtime: java8
+      MemorySize: 256
+      CodeUri:
+        Bucket: "somebucket"
+        Key: "lambda/code/lambda-shaded.jar"
+  LaunchConfiguration:
+    Type: AWS::AutoScaling::LaunchConfiguration
+    Properties:
+      ImageId: ami-123456
+      InstanceType: t2.micro
+      UserData:
+        'Fn::Base64':
+          'Fn::Sub':
+            'Fn::Transform':  # Doesn't fail on Transform
+              Name: DynamicUserData

test/unit/rules/parameters/test_used.py

@@ -19,6 +19,7 @@ def setUp(self):
             "test/fixtures/templates/good/parameters/used_transforms.yaml",
             "test/fixtures/templates/good/parameters/used_transform_removed.yaml",
             "test/fixtures/templates/good/parameters/used_transform_language_extension.json",
+            "test/fixtures/templates/good/parameters/not_used_parameters.yaml",
         ]
 
     def test_file_positive(self):
@@ -30,9 +31,3 @@ def test_file_negative(self):
         self.helper_file_negative(
             "test/fixtures/templates/bad/parameters/configuration.yaml", 17
         )
-
-    def test_file_negative_removed(self):
-        """Test failure"""
-        self.helper_file_negative(
-            "test/fixtures/templates/bad/parameters/used_transform_removed.yaml", 1
-        )