pango rbpangofontset.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangorenderer.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangoscript.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangolayoutline.c: drop  PANGO_CHECK_VERSION < 1.14

Drop #if !PANGO_CHECK_VERSION(1,9,0). Because this macro is no more
needed when drop support Pango < 1.14.
pango rbpangolayout.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangocontext.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangofontdescription.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpango.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangoattrlist.c: drop PANGO_CHECK_VERSION < 2.14
pango rbpangoanalysis.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangomatrix.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangofont.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangoitem.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangolanguage.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangoglyphstring.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangologattr.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangoscriptiter.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangoprivate.h: drop PANGO_CHECK_VERSION(1,10,0)
pango rbpangoglyphitem.c: drop PANGO_CHECK_VERSION < 1.14
pango rbpangofontmetrics.c: drop PANGO_CHECK_VERSION < 1.14