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

This reverts commit 385a7b1518201483f2e3d5f88ed6b16e3efda790.
Revert "[maven-release-plugin] prepare release openpay-api-client-1.0.0"

This reverts commit aec20cfb13b7a41e06eaea17fa09f7870c5963b2.