Yes, a controversial pastor's deportation is a sign that religion will be wiped out of Africa in the next few hundred years. Elected leaders in Africa do not want religion, because it gets in the way of government power. It also is in opposition to the corrupt governments that exist in much of Africa. The leaders want to protect their power and to do so, they will wipe out religion.
Religion as we know it today may very well be wiped out in the next few hundred years. Religion of today is very divisive and go against what many of us "know" in our hearts. They may be replaced with a new type of religion--more inclusive, more open and more universal.
More and more people are being drawn to Christianity, as study after study has shown Christians to be a lot happier, on average, than their atheist counterparts. Atheism is not a permanent solution because the lack of belief in a God also comes with the lack of belief in an afterlife. No afterlife literally means that some people will be forgotten forever, and that bad guys could get away with their crimes if they manage to not get prosecuted while on Earth, which leads to unhappiness. Atheism also allows for moral relativism to thrive which causes people to do as they wish and justify their actions with a reasons deemed good enough, which in turn leads to lawlessness and ingratitude, the latter of which is another well known cause of unhappiness.
There is no way that religion will be wiped out in the next few hundred years. It will never be wiped out at all. People are always searching for meaning from a higher power. Many people know that there is some power out there beyond us, and they will never stop searching for answers.
No, religion will not be wiped out in the next few hundred years because it is a part of human nature to want to believe in something higher. Religion is embedded in our DNA. While there may be setbacks here and there, ultimately, people will want to worship a higher power.