Cher’s relationship with Chaz Bono has hit a rough patch. According to a source, the “If I Could Turn Back Time” singer’s bond with her eldest child has been strained for quite some time to the point that Chaz, 54, is considering not inviting his mother to his wedding to his longtime partner, Shara Mathes. “Chaz and Shara are removing Cher from the guest list entirely and don’t feel too bad about it either,” a source spilled to a news outlet on their upcoming nuptials. “They want a simple ceremony with none of Cher’s theatrics.” The source noted their relationship has been difficult since Chaz…