patch 8.1.1434: test 3 is old style

Problem:    Test 3 is old style.
Solution:   Turn into a new style test. (Yegappan Lakshmanan, closes #4460)

Author: brammool

src/Makefile

@@ -2181,7 +2181,6 @@ test_libvterm:
 # These do not depend on the executable, compile it when needed.
 test1 \
 	test_eval \
-	test3 \
 	test39 \
 	test42 test44 test48 test49 \
 	test52 test59 \

src/testdir/Make_all.mak

@@ -13,7 +13,6 @@ SCRIPTS_FIRST = \
 
 # Tests that run on all systems.
 SCRIPTS_ALL = \
-	test3.out \
 	test39.out \
 	test42.out \
 	test44.out \

src/testdir/Make_vms.mms

@@ -73,7 +73,7 @@ VIMPROG = <->vim.exe
 
 .SUFFIXES : .out .in
 
-SCRIPT = test1.out test3.out \
+SCRIPT = test1.out \
        test39.out \
        test42.out test44.out test48.out test49.out \
        test64.out test69.out \