[Swift] Update the maintainers

library/swift

@@ -2,8 +2,7 @@ Maintainers: Ted Kremenek <[email protected]> (@tkremenek),
              Mishal Shah <[email protected]> (@shahmishal),
              Tom Doron <[email protected]> (@tomerd),
              Haris Amin <[email protected]> (@hamin),
-             Thomas Catterall <[email protected]> (@swizzlr),
-             Ian Partridge <[email protected]> (@ianpartridge)
+             Thomas Catterall <[email protected]> (@swizzlr)
 GitRepo: https://github.com/apple/swift-docker.git