Here in the 1841 British edition, the one instance of subject you was replaced with ye. As discussed under Mosiah 4:14, ye is the normal subject form for the second person plural pronoun, but there are nonetheless many examples of you in subject position. Here in Alma 7:6, the change of you to ye in “I trust that you do not worship idols” was probably due to the influence of five surrounding instances of that ye, including three preceding ones of I trust that ye. Interestingly, the subsequent LDS edition (1849) restored the original you, most probably by reference to an earlier printed edition. One wonders whether this one instance of that you in the earliest text for this passage is an early error for that ye. But since the original text allows the subject pronoun you, the critical text will follow the earliest textual source here. For further discussion, see under ye in volume 3.
Summary: Maintain the one case of subject you in Alma 7:6; in this instance, the earliest textual sources support you rather than the ye found elsewhere in the verse.