treewide: fix various lint errors (MR 2197)

Fix errors found by new flake8 version

pmb/helpers/pkgrel_bump.py

@@ -34,7 +34,7 @@ def package(args, pkgname, reason="", dry=False):
     pmb.helpers.file.replace(path, old, new)
 
     # Verify
-    del(pmb.helpers.other.cache["apkbuild"][path])
+    del pmb.helpers.other.cache["apkbuild"][path]
     apkbuild = pmb.parse.apkbuild(path)
     if int(apkbuild["pkgrel"]) != pkgrel_new:
         raise RuntimeError("Failed to bump pkgrel for package '" + pkgname +

pmb/parse/deviceinfo.py

@@ -106,7 +106,7 @@ def parse_kernel_suffix(args, info, device, kernel):
         # Move ret[key_kernel] to ret[key]
         logging.verbose(f"parse_kernel_suffix: {key_kernel} => {key}")
         ret[key] = ret[key_kernel]
-        del(ret[key_kernel])
+        del ret[key_kernel]
 
     return ret
 

pmb/parse/version.py

@@ -177,7 +177,7 @@ def get_token(previous, rest):
         value = -1
 
     # Get the next token (for non-leading zeros)
-    if(not len(rest)):
+    if not len(rest):
         next = "end"
     elif next == "invalid" and not invalid_suffix:
         (next, rest) = next_token(previous, rest)