remove the version

JohnOnSoftware · web-flow · commit bbffd870cf09 · 2018-04-24T16:16:09.000+08:00
remove the version to make it be auto generated by packagist.
diff --git a/composer.json b/composer.json
@@ -1,6 +1,5 @@
 {
     "name": "autodesk/core",
-    "version": "1.0",
     "description": "",
     "keywords": [
         "php",
