Removed unused build dev_dependencies
diff --git a/pubspec.yaml b/pubspec.yaml
index 615838a..983f3f4 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -10,7 +10,4 @@
   sdk: '>=2.0.0 <3.0.0'
 
 dev_dependencies:
-  build_runner: ^1.0.0
-  build_test: ^0.10.0
-  build_web_compilers: ^1.0.0
   test: ^1.0.0