style: fix error [SIM211] - Use not ... instead of False if ... else True.

Used Ruff (vscode and pre-commit) to:
- Black-compatible code formatting.
- fix all auto-fixable violations.
- isort-compatible import sorting.
- flake8-simplify manual fixes.

Signed-off-by: Paulo Vital <paulo.vital@ibm.com>

Author: pvital

src/instana/sampling.py

@@ -40,4 +40,4 @@ def __init__(self) -> None:
         self._sampled: SamplingPolicy = SamplingPolicy.DROP
 
     def sampled(self) -> bool:
-        return False if self._sampled == SamplingPolicy.DROP else True
+        return self._sampled != SamplingPolicy.DROP