Removed unused code in Diagnostics

Author: cheestree

liquidjava-verifier/src/main/java/liquidjava/diagnostics/Diagnostics.java

@@ -15,12 +15,10 @@ public class Diagnostics {
 
     private final LinkedHashSet<LJError> errors;
     private final LinkedHashSet<LJWarning> warnings;
-    private boolean debugMode;
 
     private Diagnostics() {
         this.errors = new LinkedHashSet<>();
         this.warnings = new LinkedHashSet<>();
-        this.debugMode = false;
     }
 
     public static Diagnostics getInstance() {
@@ -35,14 +33,6 @@ public void add(LJWarning warning) {
         this.warnings.add(warning);
     }
 
-    public boolean isDebugMode() {
-        return this.debugMode;
-    }
-
-    public void setDebugMode() {
-        this.debugMode = true;
-    }
-
     public boolean foundError() {
         return !this.errors.isEmpty();
     }