drop duplicated torchmetrics requirement from Fabric's testing

requirements/fabric/test.txt

@@ -7,4 +7,3 @@ pytest-rerunfailures ==12.0
 pytest-random-order ==1.1.0
 click ==8.1.7
 tensorboardX >=2.2, <2.7.0  # min version is set by torch.onnx missing attribute
-torchmetrics >=0.7.0, <1.5.0 # needed for using fixed compare_version

requirements/pytorch/base.txt

@@ -5,7 +5,7 @@ torch >=2.1.0, <2.6.0
 tqdm >=4.57.0, <4.67.0
 PyYAML >=5.4, <6.1.0
 fsspec[http] >=2022.5.0, <2024.4.0
-torchmetrics >=0.7.0, <1.5.0  # needed for using fixed compare_version
+torchmetrics >=0.7.0, <1.5.0
 packaging >=20.0, <=23.1
 typing-extensions >=4.4.0, <4.11.0
 lightning-utilities >=0.10.0, <0.12.0

src/lightning/fabric/utilities/spike.py

@@ -52,7 +52,7 @@ def __init__(
             from torchmetrics.aggregation import MeanMetric
             from torchmetrics.wrappers import Running
         else:
-            raise RuntimeError("SpikeDetection requires torchmetrics>=1.0.0! Please upgrade your version!")
+            raise RuntimeError("SpikeDetection requires `torchmetrics>=1.0.0` Please upgrade your version.")
         super().__init__()
 
         self.last_val: Union[torch.Tensor, float] = 0.0