Unnecessary '@OptIn' annotation

Reports unnecessary opt-in annotations that can be safely removed.

@OptIn annotation is required for the code using experimental APIs that can change any time in the future. This annotation becomes useless and possibly misleading if no such API is used (e.g., when the experimental API becomes stable and does not require opting in its usage anymore).

Remove annotation quick-fix can be used to remove the unnecessary @OptIn annotation.

Example:

@OptIn(ExperimentalApi::class)
fun foo(x: Bar) {
    x.baz()
}

After the quick-fix is applied:

fun foo(x: Bar) {
    x.baz()
}

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Kotlin, @snapshot@

Last modified: 13 July 2023