Move tablets test to standard tests

Tablets are now available on Scylla version that we run CI with, so I
see no reason to keep it separate.

Author: Lorak-mmk

.github/workflows/integration-tests.yml

@@ -55,9 +55,3 @@ jobs:
         export EVENT_LOOP_MANAGER=${{ matrix.event_loop_manager }}
         export SCYLLA_VERSION='release:6.2'
         ./scripts/run_integration_test.sh tests/integration/standard/ tests/integration/cqlengine/
-    
-    - name: Test tablets
-      run: |
-        export EVENT_LOOP_MANAGER=${{ matrix.event_loop_manager }}
-        export SCYLLA_VERSION='release:6.2'
-        ./scripts/run_integration_test.sh tests/integration/experiments/