removed unsused travis file

.travis.yml

@@ -1,28 +0,0 @@
-dist: bionic
-language: minimal
-services:
-  - docker
-addons:
-  apt:
-    update: true
-    packages:
-      - curl
-      - openssl
-      - ca-certificates
-      - make
-      - qemu-user-static
-env:
-  global:
-    - DOCKER_BUILDKIT=0
-  matrix:
-    - DISTRIB_ID=ubuntu VARIANT=debug        MARCH=x86_64   CHECK_TARGET=memcheck
-    - DISTRIB_ID=ubuntu VARIANT=coverage     MARCH=x86_64   CHECK_TARGET=check
-    - DISTRIB_ID=ubuntu VARIANT=release      MARCH=x86_64   CHECK_TARGET=memcheck
-    - DISTRIB_ID=ubuntu VARIANT=debug        MARCH=arm32v7  CHECK_TARGET=check
-    - DISTRIB_ID=alpine VARIANT=debug        MARCH=x86_64   CHECK_TARGET=check
-before_script:
-- make -j4 DISTRIB_ID=$DISTRIB_ID VARIANT=$VARIANT MARCH=$MARCH
-script:
-- make -j1 DISTRIB_ID=$DISTRIB_ID VARIANT=$VARIANT MARCH=$MARCH $CHECK_TARGET
-after_success:
-- bash <(curl -s https://codecov.io/bash)