fixed bug in signature of value converter methods...

plugins/org.yakindu.sct.model.stext/src/org/yakindu/sct/model/stext/conversion/BoolValueConverter.java

@@ -15,8 +15,7 @@ import org.eclipse.xtext.util.Strings;
 public class BoolValueConverter extends AbstractLexerBasedConverter<Boolean> {
 
 	@Override
-	public Boolean toValue(String string, INode node)
-			throws ValueConverterException {
+	public Boolean toValue(String string, INode node) {
 
 		if (Strings.isEmpty(string))
 			throw new ValueConverterException("Couldn't convert empty string to boolean.", node, null);

plugins/org.yakindu.sct.model.stext/src/org/yakindu/sct/model/stext/conversion/HexValueConverter.java

@@ -15,8 +15,7 @@ public class HexValueConverter extends AbstractLexerBasedConverter<Integer> {
 	public static final String HEX_PREFIX = "0x";
 	
 	@Override
-	public Integer toValue(String string, INode node)
-			throws ValueConverterException {
+	public Integer toValue(String string, INode node) {
 
 		if (Strings.isEmpty(string))
 			throw new ValueConverterException("Couldn't convert empty string to number.", node, null);