Unnecessary throws

Remove unnecessary throws declarations. This recipe will only remove unused, checked exceptions if: - The declaring class or the method declaration is final. - The method declaration is static or private. - The method overrides a method declaration in a super class and the super class does not throw the exception. - The method is public and the exception is not documented via a JavaDoc as a @throws tag. The throws declaration is retained on overridable methods (package-private and protected methods on non-final classes), and on public methods overridden within the same source file, so that a subclass override which does throw the exception keeps compiling. Overrides in other source files cannot be detected without a scanning recipe and are therefore not accounted for. Declaring exceptions that are never thrown misleads callers into writing unnecessary error-handling code and obscures the method's true behavior.