remove print stacktrace

use interface

Author: TobiGr

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/BandcampStreamExtractor.java

@@ -311,7 +311,7 @@ public Locale getLanguageInfo() {
     public List<String> getTags() {
         final Elements tagElements = document.getElementsByAttributeValue("itemprop", "keywords");
 
-        final ArrayList<String> tags = new ArrayList<>();
+        final List<String> tags = new ArrayList<>();
 
         for (final Element e : tagElements) {
             tags.add(e.text());

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/BandcampSuggestionExtractor.java

@@ -47,8 +47,6 @@ public List<String> suggestionList(final String query) throws IOException, Extra
 
             return suggestions;
         } catch (final JsonParserException e) {
-            e.printStackTrace();
-
             return Collections.emptyList();
         }