Cleanup csp.js

Signed-off-by: David Mehren <git@herrmehren.de>

lib/csp.js

@@ -79,10 +79,6 @@ function mergeDirectivesIf (condition, existingDirectives, newDirectives) {
   }
 }
 
-function areAllInlineScriptsAllowed (directives) {
-  return directives.scriptSrc.indexOf('\'unsafe-inline\'') !== -1
-}
-
 function addInlineScriptExceptions (directives) {
   directives.scriptSrc.push(getCspNonce)
   // TODO: This is the SHA-256 hash of the inline script in build/reveal.js/plugins/notes/notes.html
@@ -91,7 +87,7 @@ function addInlineScriptExceptions (directives) {
 }
 
 function getCspNonce (req, res) {
-  return "'nonce-" + res.locals.nonce + "'"
+  return '\'nonce-' + res.locals.nonce + '\''
 }
 
 function addUpgradeUnsafeRequestsOptionTo (directives) {