patch 8.2.1420: test 49 is old style

Problem:    Test 49 is old style.
Solution:   Convert remaining parts to new style. Remove obsolete items.
            (Yegappan Lakshmanan, closes #6683)
diff --git a/src/testdir/Make_amiga.mak b/src/testdir/Make_amiga.mak
index e6e55e3..efd5808 100644
--- a/src/testdir/Make_amiga.mak
+++ b/src/testdir/Make_amiga.mak
@@ -9,14 +9,9 @@
 
 include Make_all.mak
 
-SCRIPTS = $(SCRIPTS_ALL) $(SCRIPTS_MORE4)
+.SUFFIXES: .in .out .res .vim
 
-# Must run test1 first to create small.vim.
-$(SCRIPTS) $(SCRIPTS_GUI) $(NEW_TESTS_RES): $(SCRIPTS_FIRST)
-
-.SUFFIXES: .in .out
-
-nongui:	/tmp $(SCRIPTS_FIRST) $(SCRIPTS)
+nongui:	/tmp $(SCRIPTS_FIRST)
 	csh -c echo ALL DONE
 
 clean: