other package.json fixes from previous release

(cordova-common@2.2.3)
- move osenv to devDependencies
- remove semver dep not needed

NOTE: unorm dep is still implicitly needed by cordova-ios@4
(to be resolved in the next major release)
diff --git a/package.json b/package.json
index 1e602e1..ec82459 100644
--- a/package.json
+++ b/package.json
@@ -29,10 +29,8 @@
     "elementtree": "0.1.6",
     "glob": "^5.0.13",
     "minimatch": "^3.0.0",
-    "osenv": "^0.1.3",
     "plist": "^3.0.1",
     "q": "^1.4.1",
-    "semver": "^5.0.1",
     "shelljs": "^0.5.3",
     "underscore": "^1.8.3",
     "unorm": "^1.3.3"
@@ -47,6 +45,7 @@
     "eslint-plugin-standard": "^3.0.1",
     "istanbul": "^0.4.5",
     "jasmine": "^2.5.2",
+    "osenv": "^0.1.3",
     "promise-matchers": "^0.9.6",
     "rewire": "^2.5.1"
   },