[ENH] Remove test exclusions

[TonyBagnall]

new testing identified estimators that changed state in predict or transform. This was due to saving data in predict/transform to self.some_variable. Changed a couple to not store this data. If storing is required, it should be done in fit

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I have added the following labels to this PR based on the title: [ $\color{#FEF1BE}{\textsf{enhancement}}$ ].
I have added the following labels to this PR based on the changes made: [ $\color{#0e8a16}{\textsf{segmentation}}$, $\color{#2C2F20}{\textsf{testing}}$, $\color{#41A8F6}{\textsf{transformations}}$ ]. Feel free to change these if they do not properly represent the PR.

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