chore: remove email-course-reminder.mjml

apps/marketing/email-course-reminder.mjml

@@ -1,69 +0,0 @@
-<mjml>
-  <mj-body>
-    <mj-section>
-      <mj-column>
-        <mj-image
-          width="100px"
-          src="https://webdevcody.com/_next/image?url=%2Fwdc.jpeg&w=96&q=75"
-        ></mj-image>
-
-        <mj-divider border-color="#F45E43"></mj-divider>
-
-        <mj-text font-size="20px" color="#F45E43" font-family="helvetica">
-          Hey coders!
-        </mj-text>
-
-        <mj-text font-size="16px" font-family="helvetica">
-          Just a friendly reminder — Agentic Jumpstart is here, and it's your
-          chance to become an expert Agentic coder!
-        </mj-text>
-
-        <mj-text font-size="14px" font-family="helvetica">
-          If you haven't checked it out yet, now's the time. This course will
-          teach you everything you need to know about building with AI agents
-          and creating powerful, autonomous systems.
-        </mj-text>
-
-        <mj-text
-          font-size="14px"
-          font-family="helvetica"
-          color="#F45E43"
-          font-weight="bold"
-        >
-          ⚠️ Important: The price will be going back up soon!
-        </mj-text>
-
-        <mj-text font-size="14px" font-family="helvetica">
-          You're on this list because you showed early interest, and I want to
-          make sure you don't miss out on the current pricing. Once the price
-          increases, you'll need to pay the full amount.
-        </mj-text>
-
-        <mj-button
-          background-color="#F45E43"
-          color="white"
-          href="https://agenticjumpstart.com"
-          font-size="16px"
-          padding="20px"
-        >
-          Get the course now
-        </mj-button>
-
-        <mj-text font-size="14px" font-family="helvetica">
-          Don't wait — secure your spot at the current price before it's too
-          late!
-        </mj-text>
-
-        <mj-text font-size="14px" font-family="helvetica">
-          If you have questions or want to share feedback, just hit reply — I'd
-          love to hear from you.
-        </mj-text>
-
-        <mj-text font-size="14px" font-family="helvetica">
-          Thanks for being here,<br />
-          Cody
-        </mj-text>
-      </mj-column>
-    </mj-section>
-  </mj-body>
-</mjml>