fuchsia: Remove usage of qemu_pipe_* and goldfish_dma_* on Fuchsia

TEST=fx set workstation.x64 --args 'optimize = "none"'
     fx build

Change-Id: I7a4409d86055ce4bbf980fe5e14b82251de909d6
diff --git a/BUILD.gn b/BUILD.gn
index d2e01c8..9ff2817 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -123,6 +123,8 @@
 
   if (target_os == "fuchsia") {
     sources -= [
+      "shared/OpenglCodecCommon/goldfish_dma.cpp",
+      "shared/OpenglCodecCommon/goldfish_dma.h",
       "shared/qemupipe/qemu_pipe_common.cpp",
       "shared/qemupipe/qemu_pipe_guest.cpp",
       "system/OpenglSystemCommon/QemuPipeStream.cpp"