Handle versioned packages on removal as well as addition.

Author: Fizzadar

pyinfra/operations/util/packaging.py

@@ -138,13 +138,14 @@ def ensure_packages(
         )
 
         for package in diff_packages:  # add/remove from current packages
+            version = 'unknown'
+            if version_join:
+                bits = package.rsplit(version_join, 1)
+                package = bits[0]
+                if len(bits) == 2:
+                    version = bits[1]
+
             if present:
-                version = 'unknown'
-                if version_join:
-                    bits = package.rsplit(version_join, 1)
-                    package = bits[0]
-                    if len(bits) == 2:
-                        version = bits[1]
                 current_packages[package] = [version]
             else:
                 current_packages.pop(package, None)