travis: Force Arduino to use the current copy of Kaleidoscope

While we made attempts at forcing Arduino to use the current copy (that's what
all the `current-libraries` stuff are), it apparently doesn't work anymore. As a
quick workaround, delete the bundled Kaleidoscope's `library.properties`, so
Arduino won't find it, and will use the current one instead.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

.travis.yml

@@ -9,6 +9,9 @@ addons:
       - shellcheck
 install:
   - git clone --depth 1 --recurse-submodules https://github.com/keyboardio/Kaleidoscope-Bundle-Keyboardio hardware/keyboardio
+## We delete the library.properties of the Bundle's Kaleidoscope.
+## We do this to force Arduino to use the current one instead of the bundled version.
+  - rm -f hardware/keyboardio/avr/libraries/Kaleidoscope/library.properties
 script:
   - make travis-test KALEIDOSCOPE_TEMP_PATH=$(pwd)/.kaleidoscope-build-cache BOARD_HARDWARE_PATH=$(pwd)/hardware
 notifications: