databases/postgis21, databases/postgis22, databases/postgis25: remove useless pkg-install

[lbartoletti]

Summary

As mentioned by @sunpoet pkg-install is not needed anymore and was deleted in databases/postgis23 and databases/postgis24.

We should remove them from the other versions (databases/postgis21, databases/postgis22 and databases/postgis25).

As a reminder postgis21 and postgis22 expire on 15 June.

[tcberner]

===>  Configuring for postgis21-2.1.8_3
/bin/sh: cannot open /usr/ports/databases/postgis21/pkg-install: No such file or directory
*** Error code 127

[lbartoletti]

Remove pre-configure section in postgis21 and postgis22

[tcberner]

[00:01:35] Failed ports: databases/postgis21:build databases/postgis20:build

^ they fail to missing linkage on -lm, I guess.

[sunpoet]

LGTM. Thanks!

[lbartoletti]

In D20216#436263, @tcberner wrote:

[00:01:35] Failed ports: databases/postgis21:build databases/postgis20:build

^ they fail to missing linkage on -lm, I guess.

Hmmm... on HEAD?

[tcberner]

In D20216#436306, @lbartoletti_tuxfamily.org wrote:

In D20216#436263, @tcberner wrote:

[00:01:35] Failed ports: databases/postgis21:build databases/postgis20:build

^ they fail to missing linkage on -lm, I guess.

Hmmm... on HEAD?

yes

[lbartoletti]

databases/postgis21 and databases/postgis22 are deleted from ports (2019-06-15 Upstream no longer maintained). So only databases/postgis25 is concerned by this patch.