Remove Python 3.5 Travis CI jobs

Signed-off-by: Nabarun Pal <[email protected]>

Author: palnabarun

.travis.yml

@@ -25,15 +25,11 @@ jobs:
 
   - stage: test
     python: 3.9
-    env: TOXENV=update-pycodestyle 
+    env: TOXENV=update-pycodestyle
   - python: 3.9
-    env: TOXENV=coverage,codecov      
+    env: TOXENV=coverage,codecov
   - python: 3.7
     env: TOXENV=docs
-  - python: 3.5
-    env: TOXENV=py35
-  - python: 3.5
-    env: TOXENV=py35-functional
   - python: 3.6
     env: TOXENV=py36
   - python: 3.6
@@ -66,13 +62,10 @@ jobs:
   - stage: test
     python: 3.9
     env: TOXENV=update-pycodestyle
-    arch: ppc64le    
+    arch: ppc64le
   - python: 3.7
     env: TOXENV=docs
     arch: ppc64le
-  - python: 3.5
-    env: TOXENV=py35
-    arch: ppc64le
   - python: 3.6
     env: TOXENV=py36
     arch: ppc64le