Remove token revocation logic and unused dependencies

Eliminated the `RevokedToken` model and associated logic for managing token revocation. Removed unused files, related tests, and outdated dependencies in authentication modules. Simplified token decoding, user validation, and dependency injection by streamlining the flow and enhancing maintainability.

backend/app/alembic/versions/37315a5b4021_add_revokedtoken_model.py

@@ -1,41 +0,0 @@
-"""Add RevokedToken model
-
-Revision ID: 37315a5b4021
-Revises: 38bf9e7e74b3
-Create Date: 2025-02-28 17:11:07.741372
-
-"""
-from typing import Sequence, Union
-
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision: str = '37315a5b4021'
-down_revision: Union[str, None] = '38bf9e7e74b3'
-branch_labels: Union[str, Sequence[str], None] = None
-depends_on: Union[str, Sequence[str], None] = None
-
-
-def upgrade() -> None:
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.create_table('revoked_tokens',
-    sa.Column('jti', sa.String(length=50), nullable=False),
-    sa.Column('token_type', sa.String(length=20), nullable=False),
-    sa.Column('user_id', sa.UUID(), nullable=True),
-    sa.Column('id', sa.UUID(), nullable=False),
-    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
-    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
-    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='CASCADE'),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_revoked_tokens_jti'), 'revoked_tokens', ['jti'], unique=True)
-    # ### end Alembic commands ###
-
-
-def downgrade() -> None:
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_index(op.f('ix_revoked_tokens_jti'), table_name='revoked_tokens')
-    op.drop_table('revoked_tokens')
-    # ### end Alembic commands ###