Apple has pulled the over-the-air update for the latest beta of iOS 12 due to reports of sluggish performance, 9to5Mac reports. The seventh beta of iOS 12 was released yesterday to developers, alongside new betas of tvOS 12, watchOS 5, and macOS Mojave. Although the manual beta image is still available for direct download from Apple’s developer portal, the OTA update was pulled a few hours after its release, seemingly as as result of performance…