Use vscode icon for edit

extensions/ql-vscode/media/dark/edit.svg

@@ -1,3 +0,0 @@
-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M13.23 1H11.77L3.52002 9.25L3.35999 9.46997L1 13.59L2.41003 15L6.53003 12.64L6.75 12.48L15 4.22998V2.77002L13.23 1ZM2.41003 13.59L3.92004 10.59L5.37 12.04L2.41003 13.59ZM6.23999 11.53L4.46997 9.76001L12.47 1.76001L14.24 3.53003L6.23999 11.53Z" fill="#C5C5C5"/>
-</svg>

extensions/ql-vscode/media/light/edit.svg

@@ -1,3 +0,0 @@
-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M13.2302 1H11.7703L3.52026 9.25L3.36023 9.46997L1.00024 13.59L2.41028 15L6.53027 12.64L6.75024 12.48L15.0002 4.22998V2.77002L13.2302 1ZM2.41028 13.59L3.92029 10.59L5.37024 12.04L2.41028 13.59ZM6.24023 11.53L4.47021 9.76001L12.4702 1.76001L14.2402 3.53003L6.24023 11.53Z" fill="#424242"/>
-</svg>

extensions/ql-vscode/package.json

@@ -523,11 +523,8 @@
       },
       {
         "command": "codeQLQueryHistory.openQuery",
-        "title": "Open the Query that Produced these Results",
-        "icon": {
-          "light": "media/light/edit.svg",
-          "dark": "media/dark/edit.svg"
-        }
+        "title": "Open Query",
+        "icon": "$(edit)"
       },
       {
         "command": "codeQLQueryHistory.itemClicked",