fix: remove Google Maps embed for GDPR compliance

The live site had the Maps iframe removed because third-party embeds
trigger cookie-consent obligations under GDPR. The Phase-1 1:1 pass
accidentally reintroduced it; this commit removes:

- the inline iframe on the home page (templates/index.html)
- the map() shortcode (templates/shortcodes/map.html)
- the {{ map() }} call on the contact page (content/contact.md)

Do not re-add without a working consent gate.

templates/index.html

@@ -91,17 +91,8 @@
 
 {# Notfall block intentionally skipped — was `published: false` in Grav. #}
 
-{# ───────── Map ───────── #}
-<section class="map-section">
-  <iframe
-    src="https://maps.google.com/maps?q=Kaiserstr.+23,+42329+Wuppertal&t=&z=15&ie=UTF8&iwloc=&output=embed"
-    width="100%"
-    height="450"
-    style="border:0"
-    loading="lazy"
-    referrerpolicy="no-referrer-when-downgrade"
-    title="Karte: Praxis am Lienhardplatz">
-  </iframe>
-</section>
+{# Map embed removed — third-party iframes trigger GDPR cookie consent.
+   The live site had it removed for this reason; do not add back without
+   a consent gate. #}
 
 {% endblock %}

templates/shortcodes/map.html

@@ -1,11 +0,0 @@
-<section class="map-section">
-  <iframe
-    src="https://maps.google.com/maps?q=Kaiserstr.+23,+42329+Wuppertal&t=&z=15&ie=UTF8&iwloc=&output=embed"
-    width="100%"
-    height="450"
-    style="border:0"
-    loading="lazy"
-    referrerpolicy="no-referrer-when-downgrade"
-    title="Karte: Praxis am Lienhardplatz">
-  </iframe>
-</section>