scripts: build-chromium: Remove obsolete enable_gvr_services

Change-Id: I5cd6515caca58d4064d88e59ee2ee38018bbeea4
diff --git a/build-chromium/build-chromium.sh b/build-chromium/build-chromium.sh
index 911366d..d495630 100755
--- a/build-chromium/build-chromium.sh
+++ b/build-chromium/build-chromium.sh
@@ -121,7 +121,6 @@
 args+=' blink_symbol_level=0'
 args+=' webview_devui_show_icon=false'
 args+=' dfmify_dev_ui=false'
-args+=' enable_gvr_services=false'
 args+=' enable_vr=false'
 args+=' enable_arcore=false'
 args+=' enable_openxr=false'