Bug 1416052 - Remove make validation from client.mk; r=nalexander

MozbuildObject._run_make() also invokes baseconfig.mk as part of
validating the make binary that will be executed.

Since mach calls this Python code and mach is now required to
invoke client.mk, the validation in client.mk is redundant and can
be removed.

autoconf.mk includes baseconfig.mk. So even once we eliminate
client.mk, the make backend itself will still validate make.
We should probably move this validation to moz.configure (if it
isn't already there). But that can be done another time.

MozReview-Commit-ID: DPCBdz253S6

--HG--
extra : rebase_source : 8588738c517bd636039555299095981c71722600

client.mk

@@ -36,16 +36,6 @@ PYTHON ?= $(shell which python2.7 > /dev/null 2>&1 && echo python2.7 || echo pyt
 
 CONFIG_GUESS := $(shell $(TOPSRCDIR)/build/autoconf/config.guess)
 
-####################################
-# Sanity checks
-
-# Windows checks.
-ifneq (,$(findstring mingw,$(CONFIG_GUESS)))
-
-# Set this for baseconfig.mk
-HOST_OS_ARCH=WINNT
-endif
-
 ####################################
 # Load mozconfig Options
 
@@ -116,9 +106,6 @@ $(error client.mk must be used via `mach`. Try running \
 `./mach $(firstword $(MAKECMDGOALS) $(.DEFAULT_GOAL))`)
 endif
 
-# Include baseconfig.mk for its $(MAKE) validation.
-include $(TOPSRCDIR)/config/baseconfig.mk
-
 # Define mkdir
 include $(TOPSRCDIR)/config/makefiles/makeutils.mk
 include $(TOPSRCDIR)/config/makefiles/autotargets.mk