[vulkan-intel] remove roller staging target

Test: CQ, built dependent fuchsia changes locally
Change-Id: I76e71fa6358fe4e0b9570e412c479c0990a35962
diff --git a/src/intel/vulkan/BUILD.gn b/src/intel/vulkan/BUILD.gn
index e92dc56..3bb90fd 100644
--- a/src/intel/vulkan/BUILD.gn
+++ b/src/intel/vulkan/BUILD.gn
@@ -65,17 +65,6 @@
   configs += [ ":vulkan_library_flags" ]
 }
 
-# Temporary staging for roller:
-# TODO(MA-596): merge ICD target definitions
-shared_library("vulkan_intel_linux") {
-  deps = [
-    ":vulkan_internal",
-    "//garnet/lib/magma/src/libmagma_linux",
-  ]
-
-  configs += [ ":vulkan_library_flags" ]
-}
-
 # Also used by testing targets
 mesa_source_set("vulkan_internal") {
   public_deps = [