delete unused files

requirments.txt

-alembic==1.0.10
-asn1crypto==0.24.0
-attrs==19.1.0
-Automat==0.7.0
-cffi==1.12.3
-constantly==15.1.0
-cryptography==2.7
-cssselect==1.0.3
-hyperlink==19.0.0
-idna==2.8
-incremental==17.5.0
-lxml==4.3.4
-Mako==1.0.12
-MarkupSafe==1.1.1
-mysqlclient==1.3.12
-parsel==1.5.1
-Pillow==6.0.0
-pyasn1==0.4.5
-pyasn1-modules==0.2.5
-pycparser==2.19
-PyDispatcher==2.0.5
-PyHamcrest==1.9.0
-PyMySQL==0.9.3
-pyOpenSSL==19.0.0
-pypiwin32==223
-python-dateutil==2.8.0
-python-dotenv==0.10.3
-python-editor==1.0.4
-pywin32==224
-queuelib==1.5.0
-Scrapy==1.6.0
-service-identity==18.1.0
-six==1.12.0
-SQLAlchemy==1.3.4
-Twisted==19.2.1
-w3lib==1.20.0
-zope.interface==4.6.0

statistics.txt

-start_time: 2019-06-14 07:02:37.424266
-scheduler/enqueued/memory: 1050
-scheduler/enqueued: 1050
-scheduler/dequeued/memory: 1050
-scheduler/dequeued: 1050
-downloader/request_count: 2051
-downloader/request_method_count/GET: 2051
-downloader/request_bytes: 623523
-robotstxt/request_count: 1
-downloader/response_count: 2051
-downloader/response_status_count/404: 1
-downloader/response_bytes: 46033776
-response_received_count: 2051
-robotstxt/response_count: 1
-robotstxt/response_status_count/404: 1
-downloader/response_status_count/200: 2050
-request_depth_max: 50
-file_count: 1000
-file_status_count/downloaded: 1000
-item_scraped_count: 1000