configure: cleanup creation of tests/tcg target config

Remove the symlink to tests/tcg/config-*.mak, which is possible now
that unused target config files are not created either.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220929114231.583801-28-alex.bennee@linaro.org>
diff --git a/meson.build b/meson.build
index 4321b8f..536e819 100644
--- a/meson.build
+++ b/meson.build
@@ -3764,7 +3764,7 @@
 summary_info = {}
 have_cross = false
 foreach target: target_dirs
-  tcg_mak = meson.current_build_dir() / 'tests/tcg' / 'config-' + target + '.mak'
+  tcg_mak = meson.current_build_dir() / 'tests/tcg' / target / 'config-target.mak'
   if fs.exists(tcg_mak)
     config_cross_tcg = keyval.load(tcg_mak)
     if 'CC' in config_cross_tcg