chore: remove use-permission WRITE_EXTERNAL_STORAGE (#335)

Author: erisu

plugin.xml

@@ -47,10 +47,6 @@
             </feature>
         </config-file>
 
-        <config-file target="AndroidManifest.xml" parent="/*">
-            <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-        </config-file>
-
         <source-file src="src/android/FileTransfer.java" target-dir="src/org/apache/cordova/filetransfer" />
         <source-file src="src/android/FileProgressResult.java" target-dir="src/org/apache/cordova/filetransfer" />
         <source-file src="src/android/FileUploadResult.java" target-dir="src/org/apache/cordova/filetransfer" />