[fusl] Let fusl use goma

R=jamesr@chromium.org

Review URL: https://codereview.chromium.org/1708423002 .

build/toolchain/fusl/BUILD.gn

diff --git a/build/toolchain/fusl/BUILD.gn b/build/toolchain/fusl/BUILD.gn
index 76a2b54..3d99546 100644
--- a/build/toolchain/fusl/BUILD.gn
+++ b/build/toolchain/fusl/BUILD.gn
@@ -19,7 +19,4 @@
   toolchain_cpu = "x64"
   toolchain_os = "linux"
   is_clang = true
-
-  use_goma = false
-  use_ccache = false
 }