Move ECSignature type from types package into eth-light-wallet type dec since only used there

packages/types/CHANGELOG.json

@@ -1,4 +1,12 @@
 [
+    {
+        "version": "1.0.0-rc.2",
+        "changes": [
+            {
+                "note": "Remove `ECSignatureBuffer`"
+            }
+        ]
+    },
     {
         "timestamp": 1532043000,
         "version": "1.0.0-rc.1",

packages/types/src/index.ts

@@ -48,12 +48,6 @@ export interface ECSignature {
     s: string;
 }
 
-export interface ECSignatureBuffer {
-    v: number;
-    r: Buffer;
-    s: Buffer;
-}
-
 /**
  * Validator signature components
  */

packages/typescript-typings/types/eth-lightwallet/index.d.ts

@@ -1,7 +1,11 @@
 // eth-lightwallet declarations
-declare module 'eth-lightwallet' {
-    import { ECSignatureBuffer } from '@0xproject/types';
 
+interface ECSignatureBuffer {
+    v: number;
+    r: Buffer;
+    s: Buffer;
+}
+declare module 'eth-lightwallet' {
     // tslint:disable-next-line:class-name
     export class signing {
         public static signTx(