fix: removes double definition of line-height (thanks to Christian Geisert)

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@193721 13f79535-47bb-0310-9956-ffa450edef68

src/codegen/properties.xml

@@ -182,13 +182,6 @@
     <datatype>Length</datatype>
     <default>24pt</default>
   </property>
-  <property>
-    <name>line-height</name>
-    <class-name>LineHeight</class-name>
-    <inherited>true</inherited>
-    <datatype>Length</datatype>
-    <default>12pt</default>
-  </property>
   <property>
     <name>space-after.optimum</name>
     <class-name>SpaceAfterOptimum</class-name>