Remove travis-support for deployment

.gitmodules

@@ -1,3 +0,0 @@
-[submodule ".travis-support"]
-	path = .travis-support
-	url = https://github.com/kemitix/kemitix-travis-support.git

.travis-support

@@ -1 +0,0 @@
-Subproject commit 5fdf0501a920e2678a8d920df986d250fc0173f4

.travis.yml

@@ -5,9 +5,4 @@ cache:
   directories:
   - "$HOME/.m2"
 install: true
-script: "./mvnw clean install"
+script: "./mvnw -U -B clean install"
-deploy:
-  provider: script
-  script: sh .travis-support/deploy.sh
-  on:
-    branch: master