dev-install: drop root check

The new C++ wrapper checks this for us.

BUG=chromium:935142
TEST=precq passes

Change-Id: I52775cd538881f165b1d49aa45fb16a92603033b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/1789858
Reviewed-by: Alex Klein <saklein@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/dev-install/dev_install b/dev-install/dev_install
index b5f64ac..e37b617 100755
--- a/dev-install/dev_install
+++ b/dev-install/dev_install
@@ -192,13 +192,6 @@
 }
 
 main() {
-  # Check if we are root.
-  if [ $(id -u) -ne 0 ]; then
-    error "Can not run dev_install."
-    error "You are not root or you did not use sudo."
-    return 1
-  fi
-
   # Sanity check.  People often run `su` or `sudo su` and leave off that final
   # - which means they don't get a proper environment.  Catch them here rather
   # than fail randomly midway through the process.