patch 8.1.2384: test 48 is old style

Problem:    Test 48 is old style.
Solution:   Merge test cases into new style test. (Yegappan Lakshmanan,
            closes #5307)
diff --git a/src/Makefile b/src/Makefile
index e1968ba..e0926a6 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2252,7 +2252,7 @@
 test1 \
 	test_eval \
 	test39 \
-	test42 test44 test48 test49 \
+	test42 test44 test49 \
 	test52 test59 \
 	test64 test69 \
 	test70 test72 \