Remove pptree (#506)

Co-authored-by: GLXPLZ <glxplz@protonmail.ch>
Co-authored-by: Chayim <chayim@users.noreply.github.com>

Author: 3 people

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "redis-om"
-version = "0.1.2"
+version = "0.1.3"
 description = "Object mappings, and more, for Redis."
 authors = ["Redis OSS <oss@redis.com>"]
 maintainers = ["Redis OSS <oss@redis.com>"]
@@ -39,7 +39,6 @@ python = ">=3.7,<4.0"
 redis = ">=3.5.3,<5.0.0"
 pydantic = "^1.10.2"
 click = "^8.0.1"
-pptree = "^3.1"
 types-redis = ">=3.5.9,<5.0.0"
 python-ulid = "^1.0.3"
 typing-extensions = "^4.4.0"