Remove depreciation warnings for bounded/unbounded, infinitesimal

[divyanshu132]

References to other Issues or PRs

Fixes #15900 #8071

Brief description of what is fixed or changed

Removed the warnings for bounded, unbounded and infinitesimal.

Other comments

Release Notes

• core
  • remove depreciation warnings

[sympy-bot]

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• core
  • remove depreciation warnings (#15911 by @divyanshu132)

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#### References to other Issues or PRs
Fixes #15900 #8071
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#### Brief description of what is fixed or changed
Removed the warnings for bounded, unbounded and infinitesimal.

#### Other comments


#### Release Notes

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*  core
   *  remove depreciation warnings
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[divyanshu132]

@oscargus I'm not able to find if there is any particular test case written specifically for depreciation warnings in sympy/core/tests/test_symbol.py. Can you please point to any test case if it is there??

[oscargus]

If you look at the test runs (click "Details") and then check the log of the failing tests. Towards the end it says what happened.

For example, for https://travis-ci.org/sympy/sympy/jobs/488134163 it reads

________ sympy/core/tests/test_assumptions.py:test_sanitize_assumptions ________
Traceback (most recent call last):
  File "/home/travis/virtualenv/python2.7.14/lib/python2.7/site-packages/sympy-1.4.dev0-py2.7.egg/sympy/utilities/runtests.py", line 1306, in _timeout
    function()
  File "/home/travis/virtualenv/python2.7.14/lib/python2.7/site-packages/sympy-1.4.dev0-py2.7.egg/sympy/core/tests/test_assumptions.py", line 885, in test_sanitize_assumptions
    assert x.is_real is True
AssertionError

So this seems to be a test explicitly for testing the conversion (which doesn't happen anymore).

Also, in https://travis-ci.org/sympy/sympy/jobs/488134169

 sympy/printing/tests/test_repr.py:test_Symbol_no_special_commutative_treatment 
Traceback (most recent call last):
  File "/home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/sympy-1.4.dev0-py3.5.egg/sympy/utilities/runtests.py", line 1306, in _timeout
    function()
  File "/home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/sympy-1.4.dev0-py3.5.egg/sympy/printing/tests/test_repr.py", line 151, in test_Symbol_no_special_commutative_treatment
    sT(Symbol('x', commutative=0), "Symbol('x', commutative=False)")
  File "/home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/sympy-1.4.dev0-py3.5.egg/sympy/printing/tests/test_repr.py", line 27, in sT
    assert srepr(expr) == string
AssertionError

seems to indicate that the testing tests that 0 is converted to False, while

________ sympy/printing/tests/test_repr.py:test_Symbol_two_assumptions _________
Traceback (most recent call last):
  File "/home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/sympy-1.4.dev0-py3.5.egg/sympy/utilities/runtests.py", line 1306, in _timeout
    function()
  File "/home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/sympy-1.4.dev0-py3.5.egg/sympy/printing/tests/test_repr.py", line 144, in test_Symbol_two_assumptions
    assert srepr(x) in (s1, s2)
AssertionError

is not so obvious based on the error log.

Note that there may be more tests in the same function that will fail, if the failing one is edited. Only the first failure in each function is shown.