Deletes deprecated renpy Python{Activity,Service}.java

[AndreMiras]

Got the deprecation warning message since april 2016.
#728

[AndreMiras]

One of the slow tox test failed with connectivity issue. I think this can be ignored
tests/test_pythonpackage_basic.py:

E                   RuntimeError: package download failed: b"WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x106635f10>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/buildozer/\nWARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x10664e0d0>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/buildozer/\nWARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x106616750>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/buildozer/\nWARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x106616090>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/buildozer/\nWARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x10664e310>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/buildozer/\nERROR: Could not find a version that satisfies the requirement buildozer==0.39 (from -r ../requirements.txt (line 1)) (from versions: none)\nERROR: No matching distribution found for buildozer==0.39 (from -r ../requirements.txt (line 1))\n"

[inclement]

I haven't seen anyone trying to use these for a while, so seems good to remove.