Remove some unused variables from core_ibex Makefile

dv/uvm/core_ibex/Makefile

@@ -56,8 +56,6 @@ VERBOSE             :=
 ITERATIONS          :=
 # Generator timeout limit in seconds
 TIMEOUT             := 1800
-# Privileged CSR YAML description file
-CSR_FILE            := riscv_dv_extension/csr_description.yaml
 # Pass/fail signature address at the end of test
 SIGNATURE_ADDR      := 8ffffffc
 
@@ -91,10 +89,6 @@ sim: post_compare $(if $(filter 1,$(COV)),merge_cov,)
 clean:
 	rm -rf $(OUT-DIR)
 
-# Options used for privileged CSR test generation
-CSR_OPTS=--csr_yaml=${CSR_FILE} \
-         --end_signature_addr=${SIGNATURE_ADDR}
-
 # This is a list of directories that are automatically generated by some
 # targets. To ensure the directory has been built, add a order-only dependency
 # (with the pipe symbol before it) on the directory name and add the directory
@@ -188,7 +182,7 @@ ts-dirs := $(foreach ts,$(tests-and-seeds),$(RUN-DIR)/$(ts)/)
 # This depends on the vendored in code in $(GEN_DIR). It also depends on the
 # values of the following Makefile variables (we want to regenerate things if,
 # for example, the simulator changes).
-instr-gen-build-var-deps := SIMULATOR CSR_OPTS SIGNATURE_ADDR
+instr-gen-build-var-deps := SIMULATOR SIGNATURE_ADDR
 # To achieve this variable tracking, we dump each of the variables to a Makefile
 # fragment and try to load it up the next time around. This done with the
 # utility function "dump-vars" at the end of the recipe.