tools: Remove get-handlebars-vars.

I built this in 2013 to help me quickly build
some sample data for our very early node tests,
I believe.

Ever since then it's just been changed for various
code sweeps.  Also, if we wanted to resurrect this
idea for some reason, we now have the template
parser that was written since then.

tools/get-handlebar-vars

@@ -1,111 +0,0 @@
-#!/usr/bin/env python3
-import sys
-import re
-import json
-
-# check for the venv
-from lib import sanity_check
-sanity_check.check_venv(__file__)
-
-from typing import Any, Dict, List
-
-def debug(obj: Any) -> None:
-    print(json.dumps(obj, indent=4))
-
-def parse_file(fn: str) -> Dict[str, Any]:
-    with open(fn) as f:
-        text = f.read()
-    tags = re.findall(r'{+\s*(.*?)\s*}+', text)
-    root = {}  # type: Dict[str, Any]
-    context = root
-    stack = []  # type: List[Dict[str, Any]]
-
-    def set_var(var: str, val: Any) -> None:
-        num_levels_up = len(re.findall(r'\.\.', var))
-        if num_levels_up:
-            var = var.split('/')[-1]
-            stack[-1 * num_levels_up][var] = val
-        else:
-            context[var] = val
-
-    for tag in tags:
-        if tag.startswith('! '):
-            continue
-
-        if tag == 'else':
-            continue
-
-        if tag[0] in '#^' and ' ' not in tag:
-            var = tag[1:]
-            set_var(var, True)
-            stack.append(context)
-            continue
-
-        if tag.startswith('#if'):
-            vars = tag.split()[1:]
-            for var in vars:
-                set_var(var, True)
-            stack.append(context)
-            continue
-
-        if tag.startswith('/if'):
-            context = stack.pop()
-            continue
-
-        if tag.startswith('#with '):
-            var = tag.split()[1]
-            new_context = {}  # type: Dict[str, Any]
-            context[var] = new_context
-            stack.append(context)
-            context = new_context
-            continue
-
-        if tag.startswith('/with'):
-            context = stack.pop()
-            continue
-
-        if tag.startswith('#unless '):
-            var = tag.split()[1]
-            set_var(var, True)
-            stack.append(context)
-            continue
-
-        if tag.startswith('/unless'):
-            context = stack.pop()
-            continue
-
-        if tag.startswith('#each '):
-            var = tag.split()[1]
-            new_context = {}
-            context[var] = [new_context]
-            stack.append(context)
-            context = new_context
-            continue
-
-        if tag.startswith('/each'):
-            context = stack.pop()
-            continue
-
-        if tag.startswith('/'):
-            context = stack.pop()
-            continue
-
-        set_var(tag, '')
-
-    def clean_this(obj: Any) -> Any:
-        if isinstance(obj, list):
-            return [clean_this(item) for item in obj]
-        if isinstance(obj, dict):
-            if len(obj) == 1 and 'this' in obj:
-                return clean_this(obj['this'])
-            return {k: clean_this(v) for k, v in obj.items()}
-        return obj
-    root = clean_this(root)
-    return root
-
-if __name__ == '__main__':
-    for fn in sys.argv[1:]:
-        print('===', fn)
-        root = parse_file(fn)
-        debug(root)
-        print()