Remove extra slide

Author: saulshanabrook

docs/explanation/pldi_2023_presentation.ipynb

@@ -390,31 +390,31 @@
   },
   {
    "cell_type": "markdown",
-   "id": "72e644b5-c987-45de-87d7-ee9da885b85f",
+   "id": "29dbf8a5-e0df-4591-954d-7e5753fe0e1c",
    "metadata": {
     "editable": true,
     "slideshow": {
-     "slide_type": "skip"
+     "slide_type": "fragment"
     },
     "tags": []
    },
    "source": [
-    "Scipy ecosystem image"
+    "1. ...for existing `egglog` users.\n",
+    "2. ...for Python data science libraries."
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "29dbf8a5-e0df-4591-954d-7e5753fe0e1c",
+   "id": "72e644b5-c987-45de-87d7-ee9da885b85f",
    "metadata": {
     "editable": true,
     "slideshow": {
-     "slide_type": "fragment"
+     "slide_type": "skip"
     },
     "tags": []
    },
    "source": [
-    "1. ...for existing `egglog` users.\n",
-    "2. ...for Python data science libraries."
+    "Scipy ecosystem image"
    ]
   },
   {