Duplicate key compiler.err.expected.module in compiler.properties

src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties

L2200:

## The following are related in form, but do not easily fit the above paradigm.
compiler.err.expected.module=\
    ''module'' expected

L3238:

###
# errors related to modules
compiler.err.expected.module=\
    expected ''module''