Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 8cc4acf3ba38fe1d3e4e85479b4a50b188df7712.
Revert "[maven-release-plugin] prepare release openpay-api-client-1.0.0"

This reverts commit bbeab2f823f106721a0d400334d8b0b5738b0681.