Revert "ads: restore Magewell 300x250 banner with placeholder SVG creative"

This reverts commit bd19ef8b7f.

public/legacy/ads/magewell-300x250.svg

@@ -1,28 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 250" role="img" aria-label="Magewell">
-  <defs>
-    <linearGradient id="mw-bg" x1="0" y1="0" x2="1" y2="1">
-      <stop offset="0" stop-color="#0a0a0a"/>
-      <stop offset="1" stop-color="#1a1a1a"/>
-    </linearGradient>
-    <linearGradient id="mw-accent" x1="0" y1="0" x2="1" y2="0">
-      <stop offset="0" stop-color="#dc2626"/>
-      <stop offset="1" stop-color="#991b1b"/>
-    </linearGradient>
-  </defs>
-  <rect width="300" height="250" fill="url(#mw-bg)"/>
-  <rect x="0" y="0" width="300" height="4" fill="url(#mw-accent)"/>
-  <rect x="0" y="246" width="300" height="4" fill="url(#mw-accent)"/>
-
-  <!-- wordmark -->
-  <text x="150" y="115" text-anchor="middle" font-family="Helvetica, Arial, sans-serif" font-size="40" font-weight="800" fill="#ffffff" letter-spacing="-1">Magewell</text>
-
-  <!-- tagline -->
-  <text x="150" y="148" text-anchor="middle" font-family="Helvetica, Arial, sans-serif" font-size="13" font-weight="500" fill="#dc2626" letter-spacing="2">PROFESSIONAL VIDEO I/O</text>
-
-  <!-- body -->
-  <text x="150" y="186" text-anchor="middle" font-family="Helvetica, Arial, sans-serif" font-size="12" fill="#9ca3af">Capture · Convert · Stream</text>
-
-  <!-- CTA chip -->
-  <rect x="100" y="200" width="100" height="28" rx="4" fill="#dc2626"/>
-  <text x="150" y="219" text-anchor="middle" font-family="Helvetica, Arial, sans-serif" font-size="12" font-weight="700" fill="#ffffff" letter-spacing="2">EXPLORE →</text>
-</svg>

src/lib/ads.ts

@@ -30,10 +30,9 @@ export const ADS_728X90: Ad[] = [
  * stacks them vertically and shuffles the order per page-view so each banner
  * cycles through positions. Add new entries here to grow the stack.
  *
- * AJA, Zixi, Lectrosonics, Opengear, Studio Hero were removed pending real
+ * AJA, Zixi, Lectrosonics, Opengear, Studio Hero, Magewell were removed
- * creatives (their Adsanity campaigns relied on ads.broadcastbeat.com,
+ * pending real creatives (their Adsanity campaigns relied on
- * which is down). Magewell now has an SVG placeholder pending a real
+ * ads.broadcastbeat.com, which is down). See PENDING_ads.md.
- * creative. See PENDING_ads.md.
  */
 export const ADS_300X250: Ad[] = [
   {
@@ -43,13 +42,6 @@ export const ADS_300X250: Ad[] = [
     alt: "Telycam Mix One ExploreXE NAB 2026",
     click_url: "https://telycam.com/",
   },
-  {
-    label: "Magewell",
-    size: "300x250",
-    src: "/legacy/ads/magewell-300x250.svg",
-    alt: "Magewell — professional video I/O",
-    click_url: "https://www.magewell.com/",
-  },
   {
     label: "LiveU",
     size: "300x250",