[Fuchsia] Remove layout_test_proxy.

layout_test_proxy was added to proxy TCP connections for blink layout
tests on Fuchsia, but it hasn't been used for a while (SSH port
forwarding is used instead).

Change-Id: Ib191bdd6a8497595122f1e6b0483853c60752b47
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1998822
Auto-Submit: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731010}

diff --git a/BUILD.gn b/BUILD.gn
index f928c3d..54d49f9d 100644
--- a/BUILD.gn
+++ b/BUILD.gn

@@ -1101,10 +1101,7 @@
     }
 
     if (is_fuchsia) {
-      data_deps += [
-        "//build/fuchsia/layout_test_proxy:layout_test_proxy_runner",
-        "//content/shell:content_shell_fuchsia",
-      ]
+      data_deps += [ "//content/shell:content_shell_fuchsia" ]
     }
 
     data = [