Remove dependency on ilang backend since we no longer use it

diff --git a/backends/firrtl/firrtl.cc b/backends/firrtl/firrtl.cc
index 94d3e14c1d6acb2dbec3a1d518914c14d43778c0..21eade1fce7b6a43ec7c348a0ec51d160e44e870 100644 (file)
--- a/backends/firrtl/firrtl.cc
+++ b/backends/firrtl/firrtl.cc
@@ -23,7 +23,6 @@
 #include "kernel/celltypes.h"
 #include "kernel/cellaigs.h"
 #include "kernel/log.h"
-#include "backends/ilang/ilang_backend.h"
 #include <algorithm>
 #include <string>
 #include <vector>