style: Fix FURB188: Prefer removeprefix over conditionally replacin…

…g with slice.

Ruff rule: https://docs.astral.sh/ruff/rules/slice-to-remove-prefix-or-suffix/

This is a new rule introduced in ruff 0.6.5

man/parser_standard_options.py

@@ -47,8 +47,7 @@ def split_opt_line(line):
         index = line.index("=")
         key = line[:index].strip()
         default = line[index + 1 :].strip()
-        if default.startswith("_("):
-            default = default[2:]
+        default = default.removeprefix("_(")
         return key, default
 
     def parse_glines(glines):

python/grass/gunittest/reporters.py

@@ -172,8 +172,7 @@ def get_svn_revision():
     rc = p.poll()
     if not rc:
         stdout = stdout.strip()
-        if stdout.endswith("M"):
-            stdout = stdout[:-1]
+        stdout = stdout.removesuffix("M")
         if ":" in stdout:
             # the first one is the one of source code
             stdout = stdout.split(":")[0]
@@ -211,8 +210,7 @@ def get_svn_info():
             if relurl is not None:
                 relurl = relurl.text
                 # relative path has ^ at the beginning in SVN version 1.8.8
-                if relurl.startswith("^"):
-                    relurl = relurl[1:]
+                relurl = relurl.removeprefix("^")
             else:
                 # SVN version 1.8.8 supports relative-url but older do not
                 # so, get relative part from absolute URL

utils/generate_release_notes.py

@@ -97,9 +97,7 @@ def print_category(category, changes, file=None):
         # Relies on author being specified as username.
         if " " in author:
             author = author.split(" ", maxsplit=1)[0]
-        if author.startswith("@"):
-            # We expect that to be always the case, but we test anyway.
-            author = author[1:]
+        author = author.removeprefix("@")
         if author in known_bot_names or author.endswith("[bot]"):
             hidden.append(item)
         elif len(visible) > max_section_length: