configure: remove the rules for the "gimpinstall" script

it was needed for the script version of gimptool which is gone.

Makefile.am

@@ -32,8 +32,6 @@ SUBDIRS = \
 	docs		\
 	build
 
-bin_SCRIPTS = @GIMPINSTALL@
-
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = \
 	gimp-@GIMP_PKGCONFIG_VERSION@.pc	\
@@ -47,8 +45,6 @@ if HAVE_XSLTPROC
 endif
 
 
-EXTRA_SCRIPTS = gimpinstall-@GIMP_TOOL_VERSION@
-
 EXTRA_DIST = \
 	AUTHORS			\
 	COPYING			\
@@ -79,9 +75,6 @@ EXTRA_DIST = \
 DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
 
 
-gimpinstall-@GIMP_TOOL_VERSION@:
-	$(LN_S) $(srcdir)/install-sh $(srcdir)/gimpinstall-@GIMP_TOOL_VERSION@
-
 check-defs:
 	@$(PYTHON) $(top_srcdir)/tools/defcheck.py $(top_srcdir) || \
 	  ( echo "*** .def files inconsistent ***"; exit 1; )

configure.ac

@@ -1969,12 +1969,6 @@ AC_SUBST(gimplocaledir)
 # Some defines for the build
 ############################
 
-GIMPINSTALL=
-if test "$INSTALL" = "$ac_install_sh"; then
-  GIMPINSTALL="gimpinstall-gimp_tool_version"
-fi
-AC_SUBST(GIMPINSTALL)
-
 AM_CONDITIONAL(STATICLIBS, test "x$enable_static" = xyes)
 
 # a tuned version of glib-mkenums