fix d3 elements removing

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@chartwerk/core",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Chartwerk core",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

src/index.ts

@@ -255,7 +255,7 @@ abstract class ChartwerkPod<T extends TimeSerie, O extends Options> {
   }
 
   protected renderMetricsContainer(): void {
-    this.d3.select('.metrics-container').remove();
+    this.chartContainer.select('.metrics-container').remove();
 
     // TODO: it should be a class with svgElParams as fields
     // container for clip path
@@ -359,7 +359,7 @@ abstract class ChartwerkPod<T extends TimeSerie, O extends Options> {
   }
 
   protected renderCrosshair(): void {
-    this.d3.selectAll('#crosshair-container').remove();
+    this.chartContainer.select('#crosshair-container').remove();
 
     this.crosshair = this.chartContainer.append('g')
       .attr('id', 'crosshair-container')