Remove analyze --dartdocs flag (#80484)

diff --git a/dev/bots/analyze.dart b/dev/bots/analyze.dart
index b39c24d..a32f80d 100644
--- a/dev/bots/analyze.dart
+++ b/dev/bots/analyze.dart
@@ -1197,7 +1197,7 @@
 }) async {
   return runCommand(
     flutter,
-    <String>['analyze', '--dartdocs', ...options],
+    <String>['analyze', ...options],
     workingDirectory: workingDirectory,
   );
 }