Removes attrs from requirements

Pipfile

@@ -17,7 +17,6 @@ eth-account = "*"
 eth-tester = "*"
 laser-ethereum = ">=0.5.20"
 "jinja2" = "*"
-attrs = ">=17.0.0"
 rlp = "<1.0.0"
 [dev-packages]
 pylint = "*"

Pipfile.lock

@@ -23,20 +23,6 @@
             ],
             "version": "==0.24.0"
         },
-        "attrdict": {
-            "hashes": [
-                "sha256:86aeb6d3809e0344409f8148d7cac9eabce5f0b577c160b5e90d10df3f8d2ad3"
-            ],
-            "version": "==2.0.0"
-        },
-        "attrs": {
-            "hashes": [
-                "sha256:1c7960ccfd6a005cd9f7ba884e6316b5e430a3f1a6c37c5f87d8b43f83b54ec9",
-                "sha256:a17a9573a6f475c99b551c0e0a812707ddda1ec9653bed04c13841404ed6f450"
-            ],
-            "index": "pypi",
-            "version": "==17.4.0"
-        },
         "btrees": {
             "hashes": [
                 "sha256:46b02cb69b26a5238db771ea1955b503df73ecf254bb8063af4c61999fc75b5c",
@@ -595,14 +581,6 @@
             ],
             "version": "==1.6.3"
         },
-        "attrs": {
-            "hashes": [
-                "sha256:1c7960ccfd6a005cd9f7ba884e6316b5e430a3f1a6c37c5f87d8b43f83b54ec9",
-                "sha256:a17a9573a6f475c99b551c0e0a812707ddda1ec9653bed04c13841404ed6f450"
-            ],
-            "index": "pypi",
-            "version": "==17.4.0"
-        },
         "isort": {
             "hashes": [
                 "sha256:1153601da39a25b14ddc54955dbbacbb6b2d19135386699e2ad58517953b34af",

requirements.txt

@@ -18,5 +18,4 @@ eth-rlp>=0.1.0
 eth-tester>=0.1.0b21
 coverage
 jinja2
-attrs
 pytest

setup.py

@@ -323,7 +323,6 @@ setup(
         'eth-tester>=0.1.0b21',
         'coverage',
         'jinja2',
-        'attrs',
         'rlp<1.0.0'
     ],