Apply suggestions from code review

Author: bitwiseman

src/main/java/org/kohsuke/github/GHAppInstallation.java

@@ -365,9 +365,4 @@ public GHAppCreateTokenBuilder createToken(Map<String, GHPermissionType> permiss
     public GHAppCreateTokenBuilder createToken() {
         return new GHAppCreateTokenBuilder(root, String.format("/app/installations/%d/access_tokens", getId()));
     }
-
-    GHAppInstallation wrap(GitHub root) {
-        this.root = root;
-        return this;
-    }
 }

src/main/java/org/kohsuke/github/GHAppInstallationsIterable.java

@@ -41,7 +41,7 @@ public GHAppInstallation[] next() {
                 if (result == null) {
                     result = v;
                 }
-                return v.getInstallations(root);
+                return v.getInstallations();
             }
         };
     }

src/main/java/org/kohsuke/github/GHAppInstallationsPage.java

@@ -11,10 +11,7 @@ public int getTotalCount() {
         return total_count;
     }
 
-    GHAppInstallation[] getInstallations(GitHub root) {
-        for (GHAppInstallation installation : installations) {
-            installation.wrap(root);
-        }
+    GHAppInstallation[] getInstallations() {
         return installations;
     }
 }