Remove coverity scan from travis.yml file

.travis.yml

@@ -21,32 +21,3 @@ script:
   - cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release —DDOUBLE_PRECISION_ENABLED=False -DCOMPILE_TESTS=True ../
   - make && make test
 
-env:
-  global:
-    # COVERITY_SCAN_TOKEN
-    - secure: "QxALeVR4akx2ZswFAO96ew"
-
-addons:
-  coverity_scan:
-
-    # GitHub project metadata
-    project:
-      name: DanielChappuis/reactphysics3d
-      version: 1.0
-      description: ReactPhysics3D
-
-    # Where email notification of build analysis results will be sent
-    notification_email: chappuis.daniel@gmail.com
-
-    # Commands to prepare for build_command
-    # ** likely specific to your build **
-    #build_command_prepend: ./configure
-
-    # The command that will be added as an argument to "cov-build" to compile your project for analysis,
-    # ** likely specific to your build **
-    build_command: make
-
-    # Pattern to match selecting branches that will run analysis. We recommend leaving this set to 'coverity_scan'.
-    # Take care in resource usage, and consider the build frequency allowances per
-    #   https://scan.coverity.com/faq#frequency
-    branch_pattern: develop