drop Wise SGD (Singapore) donation option

Wise cancelled an incoming donation and says they can't offer SGD
services to a non-profit organization. This is very strange since it
allowed us to open the account and get account details for receiving.

static/donate.html

@@ -208,7 +208,7 @@ <h2><a href="#wise">Local Bank Transfer to Wise</a></h2>
 
                 <p>You can donate to the non-profit GrapheneOS Foundation via local bank transfers
                 to our Wise account in the EU/SEPA, UK, US, Australia, New Zealand, Canada,
-                Hungary, Singapore and Turkey.</p>
+                Hungary and Turkey.</p>
 
                 <section id="wise-sepa">
                     <h2><a href="#wise-sepa">EU/SEPA (EUR)</a></h2>
@@ -369,27 +369,6 @@ <h2><a href="#wise-hungary">Hungary (HUF)</a></h2>
                     </dl>
                 </section>
 
-                <section id="wise-singapore">
-                    <h2><a href="#wise-singapore">Singapore (SGD)</a></h2>
-
-                    <dl>
-                        <dt>Account holder</dt>
-                        <dd>GrapheneOS Foundation</dd>
-
-                        <dt>Bank code</dt>
-                        <dd>0516</dd>
-
-                        <dt>Account number</dt>
-                        <dd>978-484-4</dd>
-
-                        <dt>Bank name</dt>
-                        <dd>Wise Asia-Pacific Pte. Ltd. (Formerly TransferWise)</dd>
-
-                        <dt>Wise and Bank address</dt>
-                        <dd>1 Paya Lebar Link #13-06 - #13-08 PLQ 2<br/>Paya Lebar Quarter<br/>Singapore 408533</dd>
-                    </dl>
-                </section>
-
                 <section id="wise-turkey">
                     <h2><a href="#wise-turkey">Turkey (TRY)</a></h2>