Extraneous debugging printf in hb-jdk-font.cc

When the fix for 8145901: Printed content is overlapping
was pushed an extraneous debugging message that was not
in the webrev was included. It needs to be reverted as thus :-
--- a/src/java.desktop/share/native/libfontmanager/hb-jdk-font.cc
+++ b/src/java.desktop/share/native/libfontmanager/hb-jdk-font.cc
@@ -52,7 +52,6 @@
  
     *glyph = (hb_codepoint_t)
           env->CallIntMethod(font2D, sunFontIDs.f2dCharToGlyphMID, u);
-printf("unicode=%x glyph=%x\n", unicode, *glyph);
     return (*glyph != 0);
 }