Do not deploy site from travis

.travis.yml

@@ -5,30 +5,19 @@ sudo: false
 cache: packages
 
 before_script:
-  - Rscript -e 'remotes::install_cran(c("devtools", "covr", "pkgdown", "spelling", "miniCRAN", "igraph", "ggnetwork", "intergraph"))'
-  - Rscript -e 'remotes::install_github("ropensci/rotemplate")'
+  - Rscript -e 'remotes::install_cran(c("devtools", "covr", "spelling"))'
 
 r:
   - oldrel
   - devel
+  - release
 os:
   - linux
 matrix:
   include:
     - r: release
       os: osx
-    - r: release
-      os: linux
-      env: DEPLOY=true
 
 after_success:
   - Rscript -e 'library(covr); codecov()'
   - Rscript -e 'spelling::spell_check_package(vignettes = TRUE)'
-
-deploy:
-  - provider: script
-    script: Rscript -e 'pkgdown::deploy_site_github()'
-    skip_cleanup: true
-    on:
-      branch: master
-      condition: "$DEPLOY = true"