blast_repo fixes (dart-lang/yaml#171)

drop-lint

pkgs/yaml/analysis_options.yaml

diff --git a/pkgs/yaml/analysis_options.yaml b/pkgs/yaml/analysis_options.yaml
index 369e386..46e45f0 100644
--- a/pkgs/yaml/analysis_options.yaml
+++ b/pkgs/yaml/analysis_options.yaml
@@ -13,7 +13,6 @@
     - join_return_with_assignment
     - missing_whitespace_between_adjacent_strings
     - no_runtimeType_toString
-    - package_api_docs
     - prefer_const_declarations
     - prefer_expression_function_bodies
     - use_string_buffers