duplicate glibc-compat files

I was looking at the contents of the `adoptopenjdk/openjdk11:x86_64-alpine-jdk-11.0.6_10` containers and noticed the following

```
/ # find . -type f |xargs ls -l 2>/dev/null|sort -rnk5,5|grep compat
-rwxr-xr-x 1 root root 1981024 Feb 7 20:21 ./usr/glibc-compat/lib/libstdc++.so.6.0.26
-rwxr-xr-x 1 root root 1835672 Aug 18 2019 ./usr/glibc-compat/lib/libc.so.6
-rwxr-xr-x 1 root root 1835672 Aug 18 2019 ./usr/glibc-compat/lib/libc-2.30.so
-rwxr-xr-x 1 root root 1321304 Aug 18 2019 ./usr/glibc-compat/lib/libm.so.6
-rwxr-xr-x 1 root root 1321304 Aug 18 2019 ./usr/glibc-compat/lib/libm-2.30.so
-rwxr-xr-x 1 root root 892144 Aug 18 2019 ./usr/glibc-compat/sbin/ldconfig
-rwxr-xr-x 1 root root 674320 Aug 18 2019 ./usr/glibc-compat/sbin/sln
-rwxr-xr-x 1 root root 310048 Aug 18 2019 ./usr/glibc-compat/bin/localedef
-rwxr-xr-x 1 root root 174472 Aug 18 2019 ./usr/glibc-compat/lib/libmvec.so.1
-rwxr-xr-x 1 root root 174472 Aug 18 2019 ./usr/glibc-compat/lib/libmvec.so
-rwxr-xr-x 1 root root 174472 Aug 18 2019 ./usr/glibc-compat/lib/libmvec-2.30.so
...
```

The filenames look reasonable but some of them are duplicated.
This points to https://github.com/sgerrand/alpine-pkg-glibc/issues/125