[build] Remove hermetic_deps = false

More details in https://fxrev.dev/513725.

Change-Id: I8d8aeb4a4a21ad1245d6bae3cd26e65dfd52e11f
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/glslang/+/513726
Reviewed-by: Anirudh Mathukumilli <rudymathu@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 37dc134..4c4b370 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -47,7 +47,6 @@
 }
 
 action("glslang_build_info") {
-  hermetic_deps = false
   script = "build_info.py"
 
   src_dir = "."