test: check that TextChangedT cannot delete terminal buffer

test/functional/terminal/buffer_spec.lua

@@ -413,14 +413,6 @@ describe('on_lines does not emit out-of-bounds line indexes when', function()
     feed_command('bdelete!')
     eq('', exec_lua([[return _G.cb_error]]))
   end)
-
-  it('runs TextChangedT event', function()
-    meths.set_var('called', 0)
-    command('autocmd TextChangedT * ++once let g:called = 1')
-    feed_command('terminal')
-    feed('iaa')
-    eq(1, meths.get_var('called'))
-  end)
 end)
 
 it('terminal truncates number of composing characters to 5', function()