Remove Unused Imports

Author: rcosta358

liquidjava-verifier/src/main/java/liquidjava/processor/refinement_checker/TypeChecker.java

@@ -9,7 +9,6 @@
 import liquidjava.diagnostics.errors.*;
 import liquidjava.processor.context.AliasWrapper;
 import liquidjava.processor.context.Context;
-import liquidjava.processor.context.ContextHistory;
 import liquidjava.processor.context.GhostFunction;
 import liquidjava.processor.context.GhostState;
 import liquidjava.processor.context.RefinedVariable;
@@ -41,7 +40,6 @@ public abstract class TypeChecker extends CtScanner {
     protected final Context context;
     protected final Factory factory;
     protected final VCChecker vcChecker;
-    private final ContextHistory contextHistory = ContextHistory.getInstance();
 
     public TypeChecker(Context context, Factory factory) {
         this.context = context;

liquidjava-verifier/src/main/java/liquidjava/rj_language/Predicate.java

@@ -6,9 +6,7 @@
 import java.util.Map;
 import java.util.stream.Collectors;
 
-import liquidjava.diagnostics.errors.ArgumentMismatchError;
 import liquidjava.diagnostics.errors.LJError;
-import liquidjava.diagnostics.errors.SyntaxError;
 import liquidjava.processor.context.AliasWrapper;
 import liquidjava.processor.context.Context;
 import liquidjava.processor.context.GhostFunction;

liquidjava-verifier/src/main/java/liquidjava/smt/TranslatorToZ3.java

@@ -6,7 +6,6 @@
 import com.microsoft.z3.Expr;
 import com.microsoft.z3.FPExpr;
 import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.FuncInterp;
 import com.microsoft.z3.IntExpr;
 import com.microsoft.z3.IntNum;
 import com.microsoft.z3.RealExpr;