Removed email property (#134).

src/main/java/org/gitlab4j/api/models/Member.java

@@ -13,7 +13,6 @@ public class Member {
 
     private AccessLevel accessLevel;
     private Date createdAt;
-    private String email;
     private Integer id;
     private String name;
     private String state;
@@ -35,14 +34,6 @@ public class Member {
         this.createdAt = createdAt;
     }
 
-    public String getEmail() {
-        return this.email;
-    }
-
-    public void setEmail(String email) {
-        this.email = email;
-    }
-
     public Integer getId() {
         return this.id;
     }