[devhelp] build: Stop using AC_PROG_CPP

[Sébastien Wilmet <swilmet src gnome org>]

commit 40aec66c822ea74ffe68804614a0772d1b7b7962
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Nov 10 16:34:22 2016 -0600

    build: Stop using AC_PROG_CPP
    
    We don't use $(CPP) anywhere so this doesn't belong.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=774069

 configure.ac |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6c3b21b..e65a7e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -31,7 +31,6 @@ AM_SILENT_RULES([yes])
 
 # Check for programs
 AC_PROG_CC
-AC_PROG_CPP
 
 # Initialize libtool
 LT_PREREQ([2.2])