Remove --thread-cache=0 from limit_zero test.

Author: aardvark179

test/truffle/integration/limit-zero.sh

@@ -3,4 +3,4 @@
 source test/truffle/common.sh.inc
 
 export TRUFFLERUBY_CHECK_PREINITIALIZED_SPEC=false
-jt test fast -- --default-cache=0 --thread-cache=0 --identity-cache=0 --class-cache=0 --array-dup-cache=0 --array-strategy-cache=0 --pack-unroll=0 --global-variable-max-invalidations=0
+jt test fast -- --default-cache=0 --identity-cache=0 --class-cache=0 --array-dup-cache=0 --array-strategy-cache=0 --pack-unroll=0 --global-variable-max-invalidations=0