Prune deprecated

[Borda]

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What does this PR do?

the removed argument that has not been used anyway...

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[codecov]

Codecov Report

Merging #92 (6fc8a81) into master (02f0450) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master      #92     +/-   ##
=========================================
  Coverage   97.15%   97.15%             
=========================================
  Files         122       61     -61     
  Lines        4006     2003   -2003     
=========================================
- Hits         3892     1946   -1946     
+ Misses        114       57     -57     

Flag	Coverage Δ
Linux	78.77% <ø> (ø)
Windows	78.77% <ø> (ø)
cpu	97.15% <ø> (ø)
gpu	?
macOS	97.15% <ø> (ø)
pytest	97.15% <ø> (ø)
python3.6	97.14% <ø> (ø)
python3.8	97.15% <ø> (ø)
python3.9	97.15% <ø> (ø)
torch1.3.1	95.44% <ø> (ø)
torch1.4.0	95.60% <ø> (ø)
torch1.8.0	97.15% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
torchmetrics/classification/checks.py	100.00% <ø> (ø)
torchmetrics/classification/precision_recall.py	100.00% <ø> (ø)
torchmetrics/classification/stat_scores.py	100.00% <ø> (ø)
...rics/functional/classification/precision_recall.py	100.00% <ø> (ø)
...chmetrics/functional/classification/stat_scores.py	100.00% <ø> (ø)
.../s/torchmetrics/classification/hamming_distance.py
...2/s/torchmetrics/functional/classification/dice.py
...rics/functional/classification/confusion_matrix.py
__w/2/s/torchmetrics/utilities/data.py
__w/2/s/torchmetrics/classification/f_beta.py
... and 56 more

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[kaushikb11]

Suggested change

	.. note:: What is considered a sample in the multi-dimensional multi-class case
	depends on the value of ``mdmc_average``.
	.. note:: A sample considered in the multi-dimensional multi-class case
	depends on the value of ``mdmc_average``.

Similar suggestion to other changes.