DEPR: remove warning / suppress if indexes are equal

[jreback]

#6087

I have to investigate more fully, but this warning

/home/joris/scipy/pandas/pandas/core/frame.py:2805: FutureWarning: TimeSeries broadcasting along DataFrame index by default is deprecated. Please use DataFrame.<op> to explicitly broadcast arithmetic operations along the index FutureWarning)

can be removed for cases where the index are equal (e.g. no broadcasting)

[jreback]

closing this....not that big of a deal

[dss010101]

it's annoying though. logs fill up with these warnings.

[jreback]

@dizzy0ny you should pay attention to warnings, as they are meaningful. In any event this has changed in 0.17.0 as that warning has been deprecated for quite sometime