software/ors-amarisoft: enb.jinja2.cfg: Remove unused cell_count

It stopped to be used after 49ce8ef5 (software/ors-amarisoft: Provide dedicated
TAP interface for each Radio Unit).

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus

software/ors-amarisoft/config/enb.jinja2.cfg

@@ -7,8 +7,6 @@
 {%-   do slaplte.load_cell(cell_list) %}
 {%- endif %}
 
-{%- set cell_count = cell_list|length %}
-
 {%- if slapparameter_dict.get('tdd_ul_dl_config', '[Configuration 2] 5ms 2UL 6DL (default)') == '[Configuration 2] 5ms 2UL 6DL (default)' %}
 {%- set tdd_config = 2 %}
 {%- elif slapparameter_dict.get('tdd_ul_dl_config', '[Configuration 2] 5ms 2UL 6DL (default)') == '[Configuration 6] 5ms 5UL 3DL (maximum uplink)' %}