Remove useless setters from Column

h2/src/main/org/h2/table/Column.java

@@ -279,10 +279,6 @@ public class Column {
         return precision;
     }
 
-    public void setPrecision(long p) {
-        precision = p;
-    }
-
     public int getDisplaySize() {
         return displaySize;
     }
@@ -299,10 +295,6 @@ public class Column {
         return extTypeInfo;
     }
 
-    public void setExtTypeInfo(ExtTypeInfo extTypeInfo) {
-        this.extTypeInfo = extTypeInfo;
-    }
-
     public boolean getVisible() {
         return visible;
     }