sim: delete SIM_AC_COMMON macro

Now that we've moved all content out to the common file, this is
empty and can be deleted it entirely.

sim/rx/ChangeLog

@@ -1,3 +1,8 @@
+2021-06-20  Mike Frysinger  <vapier@gentoo.org>
+
+	* configure.ac (SIM_AC_COMMON): Delete.
+	* aclocal.m4, configure: Regenerate.
+
 2021-06-20  Mike Frysinger  <vapier@gentoo.org>
 
 	* aclocal.m4: Regenerate.

sim/rx/aclocal.m4

@@ -12,6 +12,5 @@
 # PARTICULAR PURPOSE.
 
 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
-m4_include([../m4/sim_ac_common.m4])
 m4_include([../m4/sim_ac_option_hardware.m4])
 m4_include([../m4/sim_ac_output.m4])

sim/rx/configure

@@ -1683,8 +1683,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-
-
 # Check whether --enable-cycle-accurate was given.
 if test "${enable_cycle_accurate+set}" = set; then :
   enableval=$enable_cycle_accurate; case "${enableval}" in

sim/rx/configure.ac

@@ -21,8 +21,6 @@ dnl
 AC_INIT(Makefile.in)
 AC_CONFIG_MACRO_DIRS([../m4 ../.. ../../config])
 
-SIM_AC_COMMON
-
 AC_ARG_ENABLE(cycle-accurate,
 [AS_HELP_STRING([--disable-cycle-accurate],
 		[Disable cycle accurate simulation (faster runtime)])],