tests: zephyr: drivers: i2c: i2c_target_api: Run original test on L20 APP

Include:
tests: drivers: i2c: i2c_target_api: Enable test on nRF54L20 cpuapp
nrfconnect/sdk-zephyr#2671
zephyrproject-rtos/zephyr#87727

Disable nrf.extended variant of the i2c_target_api test on
nrf54l20pdk/nrf54l20/cpuapp.

Signed-off-by: Sebastian Głąb <[email protected]>

Author: nordic-segl

tests/zephyr/drivers/i2c/i2c_target_api/boards/nrf54l20pdk_nrf54l20_cpuapp.conf

@@ -9,11 +9,6 @@ common:
     fixture: i2c_bus_short
 
 tests:
-  nrf.extended.drivers.i2c.target_api.single_role.l20:
-    platform_allow:
-      - nrf54l20pdk/nrf54l20/cpuapp
-    integration_platforms:
-      - nrf54l20pdk/nrf54l20/cpuapp
   nrf.extended.drivers.i2c.target_api.single_role.7120:
     platform_allow:
       - nrf7120pdk/nrf7120/cpuapp