doc: nrf: releases: remove linking to removed functions

Removes linking to removed functions in the LTE link
controller.

Signed-off-by: Mirko Covizzi <[email protected]>

Author: MirkoCovizzi

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -896,13 +896,13 @@ Modem libraries
 
   * Removed:
 
-    * The :c:func:`lte_lc_init` function.
+    * The ``lte_lc_init`` function.
       All instances of this function can be removed without any additional actions.
-    * The :c:func:`lte_lc_deinit` function.
+    * The ``lte_lc_deinit`` function.
       Use the :c:func:`lte_lc_power_off` function instead.
-    * The :c:func:`lte_lc_init_and_connect` function.
+    * The ``lte_lc_init_and_connect`` function.
       Use the :c:func:`lte_lc_connect` function instead.
-    * The :c:func:`lte_lc_init_and_connect_async` function.
+    * The ``lte_lc_init_and_connect_async`` function.
       Use the :c:func:`lte_lc_connect_async` function instead.
     * The ``CONFIG_LTE_NETWORK_USE_FALLBACK`` Kconfig option.
       Use the :kconfig:option:`CONFIG_LTE_NETWORK_MODE_LTE_M_NBIOT` or :kconfig:option:`CONFIG_LTE_NETWORK_MODE_LTE_M_NBIOT_GPS` Kconfig option instead.