oss-fuzz runs under docker

and builds as root in that env, at least the default out of the box
experience is that for me, I suppose I could faff around getting it add a
user specifically for the build like I do for my coverity in docker
build, or just drop this.

This effectively reverts

commit 46625769
Author: Tor Lillqvist <tml@collabora.com>
Date:   Thu Apr 14 09:01:48 2016 +0300

    149

    Change-Id: I63f055756ff5f571d5ebe89aa4aee52d8ae2c510

I see your 149 and raise you a 1172

Change-Id: I3e81a725cdab1ff5ead0484dbfee11ac8fe303a9

Makefile.in

@@ -9,7 +9,7 @@
 
 gb_Top_MODULE_CHECK_TARGETS := slowcheck unitcheck subsequentcheck perfcheck uicheck screenshot
 
-.PHONY : all check-if-root bootstrap gbuild build build-non-l10n-only build-l10n-only check clean clean-build clean-host test-install distclean distro-pack-install docs download etags fetch findunusedcode get-submodules id install install-strip tags debugrun help showmodules translations packageinfo internal.clean $(gb_Top_MODULE_CHECK_TARGETS)
+.PHONY : all bootstrap gbuild build build-non-l10n-only build-l10n-only check clean clean-build clean-host test-install distclean distro-pack-install docs download etags fetch findunusedcode get-submodules id install install-strip tags debugrun help showmodules translations packageinfo internal.clean $(gb_Top_MODULE_CHECK_TARGETS)
 
 MAKECMDGOALS?=all
 build_goal:=$(if $(filter build check,$(MAKECMDGOALS)),all)\
@@ -54,14 +54,6 @@ else # MAKE_RESTARTS
 
 all: build
 
-check-if-root:
-	@if test `id -u` = 0; then \
-		echo; \
-		echo 'No. You make ME a sandwich.'; \
-		echo; \
-		exit 1; \
-	fi
-
 gb_Side ?= host
 
 include $(BUILDDIR)/config_$(gb_Side).mk
@@ -250,7 +242,7 @@ endif
 #
 # Bootstrap
 #
-bootstrap: check-if-root compilerplugins
+bootstrap: compilerplugins
 
 #
 # Build