remove 2-file version of simple_tracker

inline version does the job for now

demos/simple_tracker_config.py

@@ -1,91 +0,0 @@
-from decimal import Decimal
-import numpy as np
-from datetime import timedelta
-
-from SimCAD import configs
-from SimCAD.configuration import Configuration
-from SimCAD.configuration.utils import exo_update_per_ts, proc_trigger, bound_norm_random, \
-    ep_time_step
-
-seed = {
-}
-
-# Behaviors
-def tracker(step, sL, s):
-    currentSignal = s['signal']
-    currentFollow = s['follow']
-    dif = currentSignal - currentFollow
-    return {'value': dif}
-
-# Mechanisms
-def add(step, sL, s, _input):
-    y = 'follow'
-    x = s['follow'] + _input['value']
-    return (y, x)
-
-# Exogenous States
-period = 50
-def sinusoid(step, sL, s, _input):
-    y = 'signal'
-    x = s['elapsed_time'] + t_delta.seconds
-    x = np.sin(x * 2 * np.pi / period)
-    return (y, x)
-
-def delta_time(step, sL, s, _input):
-    y = 'elapsed_time'
-    x = s['elapsed_time'] + t_delta.seconds
-    return (y, x)
-
-ts_format = '%Y-%m-%d %H:%M:%S'
-t_delta = timedelta(days=0, minutes=0, seconds=1)
-def time_model(step, sL, s, _input):
-    y = 'timestamp'
-    x = ep_time_step(s, dt_str=s['timestamp'], fromat_str=ts_format, _timedelta=t_delta)
-    return (y, x)
-
-# Genesis States
-genesis_states = {
-    'signal': float(0),
-    'follow': float(0),
-    'elapsed_time': float(0),
-    'timestamp': '2018-01-01 00:00:00'
-}
-
-# remove `exo_update_per_ts` to update every ts
-exogenous_states = exo_update_per_ts(
-    {
-    "signal": sinusoid,
-    'elapsed_time': delta_time,
-    "timestamp": time_model
-    }
-)
-
-env_processes = {
-}
-
-mechanisms = {
-    "add": {
-        "behaviors": {
-            "tracker": tracker
-        },
-        "states": { 
-            "follow": add
-        }
-    }
-}
-
-sim_config = {
-    "N": 1,
-    "T": range(50)
-}
-
-configs.append(
-    Configuration(
-        sim_config=sim_config,
-        state_dict=genesis_states,
-        seed=seed,
-        exogenous_states=exogenous_states,
-        env_processes=env_processes,
-        mechanisms=mechanisms
-    )
-)