Remove unused code

Author: gcatanese

src/main/java/com/apiflows/model/Parameter.java

@@ -7,9 +7,7 @@ public class Parameter {
     private String name;
     private String in;
     private String value;
-    private String target;
     private String style;
-    private String $ref = null;
 
     @JsonProperty("name")
     public String getName() {
@@ -38,15 +36,6 @@ public void setValue(String value) {
         this.value = value;
     }
 
-    @JsonProperty("target")
-    public String getTarget() {
-        return target;
-    }
-
-    public void setTarget(String target) {
-        this.target = target;
-    }
-
     public String getStyle() {
         return style;
     }
@@ -55,14 +44,6 @@ public void setStyle(String style) {
         this.style = style;
     }
 
-    public String get$ref() {
-        return $ref;
-    }
-
-    public void set$ref(String $ref) {
-        this.$ref = $ref;
-    }
-
     public Parameter name(String name) {
         this.name = name;
         return this;
@@ -78,19 +59,9 @@ public Parameter value(String value) {
         return this;
     }
 
-    public Parameter target(String target) {
-        this.target = target;
-        return this;
-    }
-
     public Parameter style(String style) {
         this.style = style;
         return this;
     }
 
-    public Parameter $ref(String $ref) {
-        this.$ref = $ref;
-        return this;
-    }
-
 }

src/main/java/com/apiflows/parser/source/OperationBinder.java

@@ -58,7 +58,6 @@ List<Operation> getOperations(String openapi) {
 
         ParseOptions options = new ParseOptions();
         options.setResolve(true);
-
         SwaggerParseResult parseResult = null;
 
         try {