Remove invalid assert

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/generator/PGenerator.java

@@ -194,7 +194,6 @@ public void setNextCallTarget() {
      * next yield index to use via {@link #handleResult}
      */
     public RootCallTarget getCurrentCallTarget() {
-        assert !finished;
         return callTargets[currentCallTarget];
     }
 

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/compiler/Compiler.java

@@ -160,7 +160,6 @@ public class Compiler implements SSTreeVisitor<Void> {
     ScopeEnvironment env;
     EnumSet<Flags> flags = EnumSet.noneOf(Flags.class);
     int optimizationLevel = 0;
-    boolean isInteractive = false;
     int nestingLevel = 0;
     CompilationUnit unit;
     List<CompilationUnit> stack = new ArrayList<>();