[ci] Remove coverity and codecov

* This coverity runner doesn't work from here but will try again in GitHub Actions bot
* Trying to move codecov to GitHub Actions

.travis.yml

@@ -8,8 +8,6 @@ env:
     - CPPFLAGS=""
     - CONFIGURE_OPTS="--with-freetype --with-glib --with-gobject --with-cairo --with-icu --with-graphite2"
     - NOCONFIGURE=1
-    # COVERITY_SCAN_TOKEN
-    - secure: "k6l/18dpsoPAf0E5RQWCr+rgjbHns0H3k0WzSYovCoVg0B7RVlV8x8OjyEOBzEvXI4aaHRdH6MHCPDFnX4fa7ysImlT6LxxIG8YhDdLkJWyS0hHbcJiGxko9AhAGzOZcDl8fZi13d697wagMqqXpjN5v2T/AQm8t4X9z2otJosY="
 
 matrix:
   include:
@@ -28,7 +26,6 @@ matrix:
         - rm -rf freetype-2.9
       after_success:
         - bash .ci/run-coveralls.sh # coveralls.io code coverage
-        - bash <(curl -s https://codecov.io/bash) # codecov.io code coverage
         - bash .ci/deploy-docs.sh
         - bash .ci/trigger-coverity.sh
 
@@ -66,13 +63,3 @@ addons:
       - libicu-dev # for extra unicode functions
       - libgraphite2-dev # for extra shapers
       #- libgirepository1.0-dev # for gobject-introspection
-
-  coverity_scan:
-    project:
-      name: behdad/harfbuzz
-      version: 1.0
-      description: HarfBuzz OpenType text shaping engine
-    notification_email: harfbuzz-bots-chatter@googlegroups.com
-    build_command_prepend: ./autogen.sh --with-freetype --with-glib --with-gobject --with-cairo --with-icu --with-graphite2
-    build_command: make
-    branch_pattern: coverity_scan