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File zero-javadoc-verbose.patch of Package java-1_8_0-openjdk

--- openjdk/make/Javadoc.gmk
+++ openjdk/make/Javadoc.gmk
@@ -260,7 +260,6 @@ $(call CopyrightLine,$(COPYRIGHT_URL),$(
 # Common javadoc options used by all
 COMMON_JAVADOCFLAGS = \
     -XDignore.symbol.file=true \
-    -quiet \
     -use \
     -keywords \
     -Xdoclint:none \