remove deprecated utilities

Summary: Remove `$Subtype` and `$Supertype` utilities. Replacement was done on a best-effort basis. In many cases it sufficed to replace `$Supertype<T>` and `$Subtype<T>` with `T`, but when this was not possible `any | T` and `any & T` were used instead.

Reviewed By: jbrown215

Differential Revision: D13624765

fbshipit-source-id: 82ee9d43cfc318ed4bd2d84e0f4c5c1d8f488a9c

Author: Daniel Sainati

.flowconfig

@@ -85,6 +85,7 @@ sketchy-null-mixed=warn
 # This is noisy for now. We *do* still want to warn on importing types
 # from untyped files, which is covered by untyped-type-import
 untyped-import=off
+deprecated-utility=error
 
 [strict]
 deprecated-type

.flowconfig.android

@@ -85,6 +85,7 @@ sketchy-null-mixed=warn
 # This is noisy for now. We *do* still want to warn on importing types
 # from untyped files, which is covered by untyped-type-import
 untyped-import=off
+deprecated-utility=error
 
 [strict]
 deprecated-type

flow-typed/npm/prop-types_v15.x.x.js

@@ -38,7 +38,7 @@ declare module 'prop-types' {
   declare var shape: React$PropType$Shape;
 
   declare function checkPropTypes<V>(
-    propTypes: $Subtype<{[_: $Keys<V>]: $npm$propTypes$ReactPropsCheckType}>,
+    propTypes: {[_: $Keys<V>]: $npm$propTypes$ReactPropsCheckType},
     values: V,
     location: string,
     componentName: string,