Fix tests.

fud2/tests/snapshots/tests__test@plan_calyx-to-cocotb-axi.snap

@@ -25,7 +25,7 @@ rule make-cocotb
 rule copy
   command = cp $in $out
 rule cleanup-cocotb
-  command = sed -n '/Output:/,/make\[1\]/{/Output:/d;/make\[1\]/d;p}' $in | sed -n ':a;N;$$!ba;s/^[^{]*{\(.*\)}[^}]*$$/\1/p' | sed '1d;$$d' > $out
+  command = sed -n '/Output:/,/make\[1\]/{/Output:/d;/make\[1\]/d;p}' $in > $out
 
 build Makefile: copy $cocotb-makefile-dir/Makefile
 build axi_test.py: copy $cocotb-makefile-dir/axi_test.py