Remove redundant uvloop install now that it's in requirements.txt

Author: TimothyFitz

.travis.yml

@@ -34,9 +34,6 @@ before_script:
     - "mysql -e 'DROP DATABASE IF EXISTS test_pymysql2; create database test_pymysql2 DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;'"
 
 install:
-    - if python -c "import sys; sys.exit(sys.version_info < (3,5))"; then
-          pip install uvloop;
-      fi
     - pip install -Ur requirements-dev.txt
     - pip install .
     - pip install codecov