Remove unused dependencies. (#89)

Author: lrhn

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.6.5
+
+* Drop unused dependencies.
+
 ## 0.6.4
 
 * Make compatible with the null-safe version of `args`. 

pubspec.yaml

@@ -1,5 +1,5 @@
 name: dart2js_info
-version: 0.6.4
+version: 0.6.5
 
 description: >
   Libraries and tools to process data produced when running dart2js with
@@ -12,13 +12,11 @@ environment:
 
 dependencies:
   args: ^1.4.3
-  charcode: ^1.1.0
   collection: ^1.10.1
   fixnum: '>=0.10.5 <2.0.0'
   path: ^1.3.6
   protobuf: '>=1.0.1 <3.0.0'
   shelf: ^0.7.3
-  shelf_static: ^0.2.4
   yaml: ^2.1.0
 
 dev_dependencies: