remove stale deps + fix [sentencepiece] dep

pyproject.toml

@@ -25,10 +25,8 @@ dependencies = [
     "evaluate>=0.4.0",
     "jsonlines",
     "numexpr",
-    "omegaconf>=2.2",
     "peft>=0.2.0",
     "pybind11>=2.6.2",
-    "pycountry",
     "pytablewriter",
     "rouge-score>=0.0.4",
     "sacrebleu>=1.5.0",
@@ -65,8 +63,8 @@ linting = [
     "pre-commit",
 ]
 testing = ["pytest", "pytest-cov", "pytest-xdist"]
-multilingual = ["nagisa>=0.2.7", "jieba>=0.42.1"]
-sentencepiece = ["sentencepiece>=0.1.98", "protobuf>=4.22.1", "pycountry"]
+multilingual = ["nagisa>=0.2.7", "jieba>=0.42.1", "pycountry"]
+sentencepiece = ["sentencepiece>=0.1.98", "protobuf>=4.22.1"]
 promptsource = [
     "promptsource @ git+https://github.com/bigscience-workshop/promptsource.git#egg=promptsource"
 ]