Remove app_shell installer

This installer and app_shell itself are unused.

Bug: 987150
Change-Id: I299a53b2d4090e35c81ff32aeffe717303921c6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1716604
Commit-Queue: Nico Weber <[email protected]>
Reviewed-by: Nico Weber <[email protected]>
Reviewed-by: Ben Wells <[email protected]>
Auto-Submit: Michael Giuffrida <[email protected]>
Cr-Commit-Position: refs/heads/master@{#685203}
diff --git a/BUILD.gn b/BUILD.gn
index 6e56c00..6c65883 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -516,10 +516,7 @@
     }
 
     if (enable_extensions) {
-      deps += [
-        "//extensions/shell:app_shell",
-        "//extensions/shell/installer:app_shell_installer",
-      ]
+      deps += [ "//extensions/shell:app_shell" ]
       if (is_desktop_linux && is_official_build) {
         deps += [ "//extensions/shell:app_shell_linux_symbols" ]
       }