remove old files and scripts from sim directory

sim/coverage

@@ -1,2 +0,0 @@
-# recompile coverage tests and run coverage including them
-pushd $WALLY/tests/coverage; make; popd; ./regression-wally -coverage

sim/make-tests.sh

@@ -1,16 +0,0 @@
-#!/bin/bash
-
-rm -r work*
-make allclean
-make
-# cd ../../tests/imperas-riscv-tests/
-# make allclean
-# make
-# cd ../wally-riscv-arch-test
-# make allclean
-# make
-# make XLEN=32
-# exe2memfile.pl work/*/*/*.elf
-# cd ../linux-testgen/linux-testvectors
-# ./tvLinker.sh
-# cd ../../../regression

sim/run-imperasdv-tests.bash

@@ -1,22 +0,0 @@
-#!/bin/bash
-
-if [ -d results ]; then
-    rm -rf results
-fi
-mkdir -p results
-
-ALL=$(find ${WALLY}/external/ImperasDV-HMC/tests/riscof/work/riscv-arch-test/rv64i_m -name "ref" -type d)
-
-export IMPERAS_TOOLS=$(pwd)/imperas.ic
-export OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1"
-
-for t in $ALL; do
-    export TESTDIR=$(dirname ${t})
-    OUTLOG=$(echo ${TESTDIR} | sed "s|${WALLY}/external/ImperasDV-HMC/tests/riscof/work|results|").log
-    OUTDIR=$(dirname ${OUTLOG})
-    echo "Running test ${TESTDIR} -> ${OUTDIR} :: ${OUTLOG}"
-
-    mkdir -p ${OUTDIR}
-    vsim -c -do "do wally-imperas.do rv64gc"
-    mv transcript ${OUTLOG}
-done

sim/test

@@ -1 +0,0 @@
-test