Update the removeConstructorName fix to handle primary constructors

Closes https://github.com/dart-lang/sdk/issues/63072

Change-Id: I3391484a2693b0ec9f520353ac231ee0d9a60c7c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/494623
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>

pkg/analysis_server/lib/src/services/correction/dart/remove_constructor_name.dart

@@ -35,6 +35,10 @@ class RemoveConstructorName extends ResolvedCorrectionProducer {
       await builder.addDartFileEdit(file, (builder) {
         builder.addDeletion(range.startStart(dotToken, node.token.next!));
       });
+    } else if (node is PrimaryConstructorName) {
+      await builder.addDartFileEdit(file, (builder) {
+        builder.addDeletion(range.startStart(node.period, node.name.next!));
+      });
     }
   }
 }

pkg/analysis_server/test/src/services/correction/fix/remove_constructor_name_test.dart

@@ -75,7 +75,16 @@ class RemoveConstructorNameTest extends FixProcessorLintTest {
   @override
   String get lintCode => LintNames.unnecessary_constructor_name;
 
-  Future<void> test_constructorDeclaration() async {
+  Future<void> test_declaration_primary() async {
+    await resolveTestCode(r'''
+class C.new(int x);
+''');
+    await assertHasFix(r'''
+class C(int x);
+''');
+  }
+
+  Future<void> test_declaration_secondary() async {
     await resolveTestCode(r'''
 class A {
   A.new(int x) {
@@ -92,7 +101,7 @@ class A {
 ''');
   }
 
-  Future<void> test_constructorInvocation() async {
+  Future<void> test_invocation() async {
     await resolveTestCode(r'''
 class A { }
 var a = A.new();