Revert "Refactor statusline OptionSet into function"

This reverts commit 6142ad2.

It actually made it harder to understand what's going on due to the
augroup scope.

Author: vimpostor

autoload/tpipeline.vim

@@ -32,7 +32,16 @@ func tpipeline#build_hooks()
 			au CursorMoved * call tpipeline#update()
 		endif
 
-		call tpipeline#util#set_stl_hooks()
+		if empty(g:tpipeline_statusline) && !g:tpipeline_tabline
+			if g:tpipeline_clearstl
+				if tpipeline#util#is_lualine()
+					au OptionSet statusline call tpipeline#util#clear_stl()
+				else
+					au OptionSet statusline if v:option_type == 'global' | call tpipeline#util#clear_stl() | endif
+				endif
+			endif
+			au OptionSet statusline call tpipeline#update()
+		endif
 	augroup END
 endfunc
 

autoload/tpipeline/util.vim

@@ -34,16 +34,3 @@ func tpipeline#util#is_lualine()
 	" lualine doesn't play nice, so it needs extra workarounds
 	return has('nvim') && !empty(nvim_get_autocmds(#{group: "lualine"}))
 endfunc
-
-func tpipeline#util#set_stl_hooks()
-	if empty(g:tpipeline_statusline) && !g:tpipeline_tabline
-		if g:tpipeline_clearstl
-			if tpipeline#util#is_lualine()
-				au OptionSet statusline call tpipeline#util#clear_stl()
-			else
-				au OptionSet statusline if v:option_type == 'global' | call tpipeline#util#clear_stl() | endif
-			endif
-		endif
-		au OptionSet statusline call tpipeline#update()
-	endif
-endfunc