Remove unneeded tmpfile variable and unused imports to fix lint error

Author: weiji14

pygmt/base_plotting.py

@@ -3,9 +3,7 @@
 Does not define any special non-GMT methods (savefig, show, etc).
 """
 import contextlib
-import csv
 import numpy as np
-import pandas as pd
 
 from .clib import Session
 from .exceptions import GMTInvalidInput
@@ -14,7 +12,6 @@
     dummy_context,
     data_kind,
     fmt_docstring,
-    GMTTempFile,
     use_alias,
     kwargs_to_strings,
 )
@@ -970,14 +967,13 @@ def text(
         if position is not None and isinstance(position, str):
             kwargs["F"] += f'+c{position}+t"{text}"'
 
-        with GMTTempFile(suffix=".txt") as tmpfile:
-            with Session() as lib:
-                if kind == "file" or (kind == "vectors" and position is not None):
-                    file_context = dummy_context(textfiles)
-                elif kind == "vectors" and position is None:
-                    file_context = lib.virtualfile_from_vectors(
-                        np.atleast_1d(x), np.atleast_1d(y), np.atleast_1d(text)
-                    )
-                with file_context as fname:
-                    arg_str = " ".join([fname, build_arg_string(kwargs)])
-                    lib.call_module("text", arg_str)
+        with Session() as lib:
+            if kind == "file" or (kind == "vectors" and position is not None):
+                file_context = dummy_context(textfiles)
+            elif kind == "vectors" and position is None:
+                file_context = lib.virtualfile_from_vectors(
+                    np.atleast_1d(x), np.atleast_1d(y), np.atleast_1d(text)
+                )
+            with file_context as fname:
+                arg_str = " ".join([fname, build_arg_string(kwargs)])
+                lib.call_module("text", arg_str)