chore(ios): remove gap from CSP (#67)

diff --git a/template_src/www/index.html b/template_src/www/index.html
index cc005bf..716987c 100644
--- a/template_src/www/index.html
+++ b/template_src/www/index.html
@@ -24,12 +24,11 @@
         Customize this policy to fit your own app's needs. For more guidance, please refer to the docs:
             https://cordova.apache.org/docs/en/latest/
         Some notes:
-            * gap: is required only on iOS (when using UIWebView) and is needed for JS->native communication
             * https://ssl.gstatic.com is required only on Android and is needed for TalkBack to function properly
             * Disables use of inline scripts in order to mitigate risk of XSS vulnerabilities. To change this:
                 * Enable inline JS: add 'unsafe-inline' to default-src
         -->
-        <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *; img-src 'self' data: content:;">
+        <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *; img-src 'self' data: content:;">
         <meta name="format-detection" content="telephone=no">
         <meta name="msapplication-tap-highlight" content="no">
         <meta name="viewport" content="initial-scale=1, width=device-width, viewport-fit=cover">