scripts/build: remove [/usr]/man by default

Signed-off-by: Stephan Raue <stephan@openelec.tv>

scripts/build

@@ -370,6 +370,7 @@ if [ ! -f $STAMP ]; then
             for i in $INSTALL $INSTALL/usr; do
               rm -rf $i/include
               rm -rf $i/lib/pkgconfig
+              rm -rf $i/man
               rm -rf $i/share/aclocal
               rm -rf $i/share/bash-completion
               rm -rf $i/share/doc