Remove unneeded assertion from the wait block

This situation can actually happen when a running broadcast script with a (waiting) wait block is called.

This causes a reset of its VM, but doesn't clear the time map.

Anyway, this doesn't matter because the wait information is reset in startWait().

Author: adazem009

src/blocks/controlblocks.cpp

@@ -171,7 +171,6 @@ unsigned int ControlBlocks::stopOtherScriptsInSprite(VirtualMachine *vm)
 unsigned int ControlBlocks::startWait(VirtualMachine *vm)
 {
     auto currentTime = std::chrono::steady_clock::now();
-    assert(m_timeMap.count(vm) == 0);
     m_timeMap[vm] = { currentTime, vm->getInput(0, 1)->toDouble() * 1000 };
     return 1;
 }