patch 8.1.0711: test files still use function!

Problem:    Test files still use function!.
Solution:   Remove the exclamation mark.  Fix overwriting a function.
diff --git a/src/testdir/test_smartindent.vim b/src/testdir/test_smartindent.vim
index 9e93a55..e89ad19 100644
--- a/src/testdir/test_smartindent.vim
+++ b/src/testdir/test_smartindent.vim
@@ -1,24 +1,24 @@
 " Tests for smartindent
 
 " Tests for not doing smart indenting when it isn't set.
-function! Test_nosmartindent()
+func Test_nosmartindent()
   new
   call append(0, ["		some test text",
-      	\ "		test text",
-      	\ "test text",
-      	\ "		test text"])
+	\ "		test text",
+	\ "test text",
+	\ "		test text"])
   set nocindent nosmartindent autoindent
   exe "normal! gg/some\<CR>"
   exe "normal! 2cc#test\<Esc>"
   call assert_equal("		#test", getline(1))
   enew! | close
-endfunction
+endfunc
 
-function MyIndent()
-endfunction
+func MyIndent()
+endfunc
 
 " When 'indentexpr' is set, setting 'si' has no effect.
-function Test_smartindent_has_no_effect()
+func Test_smartindent_has_no_effect()
   new
   exe "normal! i\<Tab>one\<Esc>"
   set noautoindent
@@ -36,6 +36,6 @@
   set smartindent&
   set indentexpr&
   bwipe!
-endfunction
+endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab