Remove GSM spy functionality for legal compliance

Remove all GSM cellular intelligence features including tower scanning,
signal monitoring, rogue detection, crowd density analysis, and
OpenCellID integration across routes, templates, utils, tests, and
build configuration.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

utils/dependencies.py

@@ -444,38 +444,6 @@ TOOL_DEPENDENCIES = {
             }
         }
     },
-    'gsm': {
-        'name': 'GSM Intelligence',
-        'tools': {
-            'grgsm_scanner': {
-                'required': True,
-                'description': 'gr-gsm scanner for finding GSM towers',
-                'install': {
-                    'apt': 'Build gr-gsm from source: https://github.com/bkerler/gr-gsm',
-                    'brew': 'brew install gr-gsm (may require manual build)',
-                    'manual': 'https://github.com/bkerler/gr-gsm'
-                }
-            },
-            'grgsm_livemon': {
-                'required': True,
-                'description': 'gr-gsm live monitor for decoding GSM signals',
-                'install': {
-                    'apt': 'Included with gr-gsm package',
-                    'brew': 'Included with gr-gsm',
-                    'manual': 'Included with gr-gsm'
-                }
-            },
-            'tshark': {
-                'required': True,
-                'description': 'Wireshark CLI for parsing GSM packets',
-                'install': {
-                    'apt': 'sudo apt-get install tshark',
-                    'brew': 'brew install wireshark',
-                    'manual': 'https://www.wireshark.org/download.html'
-                }
-            }
-        }
-    }
 }