Revert "Add requirement upper bounds to our own packages"

This reverts commit d29ba7a.

Author: eddiebergman

autosklearn/util/dependencies.py

@@ -17,9 +17,6 @@ def verify_packages(packages: Optional[Union[str, List[str]]]) -> None:
         if not package:
             continue
 
-        if package.startswith("#"):
-            continue
-
         match = RE_PATTERN.match(package)
         if match:
             name = match.group('name')

requirements.txt

@@ -15,8 +15,7 @@ pandas>=1.0
 liac-arff
 threadpoolctl
 
-# We bound the requirements of our own libraries we control
-ConfigSpace>=0.5,<0.6
-pynisher>=0.6.3,<0.7
+ConfigSpace>=0.4.14,<0.5
+pynisher>=0.6.3
 pyrfr>=0.8.1,<0.9
-smac>=1.3,<1.4
+smac>=0.14