test: FreeBSD is ready for tests with data segment

After the issue #4537 fixed for the data segment size limit,
the temporary blocked tests because of it unblocked.

Part of #4271

(cherry picked from commit e6866550)

test/app-tap/debug.skipcond

-import platform
-
-# Disabled on FreeBSD due to fail #4271:
-#   Data segment size exceeds process limit
-if platform.system() == 'FreeBSD':
-    self.skip = 1
-
-# vim: set ft=python:

test/app-tap/minimal.skipcond

-import platform
-
-# Disabled on FreeBSD due to fail #4271:
-#   Data segment size exceeds process limit
-if platform.system() == 'FreeBSD':
-    self.skip = 1
-
-# vim: set ft=python:

test/app-tap/tarantoolctl.skipcond

-import platform
-
-# Disabled on FreeBSD due to fail #4271:
-#   Data segment size exceeds process limit
-if platform.system() == 'FreeBSD':
-    self.skip = 1
-
-# vim: set ft=python: