Update rdf-toolkit pointer to use update to original download location

References:
* [AC-183] Apply minimal CASE-Utilities-Python updates to use CASE 0.4.0
  and UCO 0.6.0

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

Author: ajnelson-nist

tests/case_file/Makefile

@@ -19,9 +19,7 @@ tests_srcdir := $(top_srcdir)/tests
 
 qc_srcdir := $(top_srcdir)/dependencies/CASE-Examples-QC
 
-case_srcdir := $(qc_srcdir)/dependencies/CASE-Examples/dependencies/CASE
-
-RDF_TOOLKIT_JAR := $(case_srcdir)/lib/rdf-toolkit.jar
+RDF_TOOLKIT_JAR := $(qc_srcdir)/dependencies/CASE-Examples/dependencies/CASE-0.3.0/CASE/lib/rdf-toolkit.jar
 
 COMM ?= $(shell which gcomm 2>/dev/null || which comm)
 ifeq ($(COMM),)