------
## 最终结论
```python
import re

def remove_uppercase(s):
    return re.sub(r'[A-Z]+', '', s)

# Test cases
assert remove_uppercase('cAstyoUrFavoRitETVshoWs') == 'cstyoravoitshos'
assert remove_uppercase('wAtchTheinTernEtrAdIo') == 'wtchheinerntrdo'
assert remove_uppercase('VoicESeaRchAndreComMendaTionS') == 'oiceachndreomendaion'
```