Fix compilation with -Wtype-limits

[Nerixyz]

CI currently fails, because of a check if an unsigned integer is greater or equal to zero. This PR removes the check, getting rid of a warning in GCC and making CI green.
Clang emits a similar warning if -Wtype-limits is passed (enabling -Wtautological-unsigned-zero-compare), which isn't enabled through -pedantic -Wpedantic -Wall -Wextra -Werror (thus Apple-Clang doesn't complain).

---

Aside:

All .clang-formats are currently broken [at least with 18.1], because of a duplicate AfterStruct.

Diff

diff --git a/.clang-format b/.clang-format
index f75a5542..9a25bae9 100644
--- a/.clang-format
+++ b/.clang-format
@@ -74,7 +74,6 @@ BraceWrapping:
   AfterControlStatement: false
   AfterClass: false
   AfterNamespace: false
-  AfterStruct: false
   AfterUnion: false
   BeforeElse: true
   BeforeCatch: true
diff --git a/documentation/.clang-format b/documentation/.clang-format
index 00ef7c2c..b2a47e16 100644
--- a/documentation/.clang-format
+++ b/documentation/.clang-format
@@ -74,7 +74,6 @@ BraceWrapping:
   AfterControlStatement: false
   AfterClass: false
   AfterNamespace: false
-  AfterStruct: false
   AfterUnion: false
   BeforeElse: true
   BeforeCatch: true
diff --git a/examples/.clang-format b/examples/.clang-format
index 9807f392..1c209463 100644
--- a/examples/.clang-format
+++ b/examples/.clang-format
@@ -74,7 +74,6 @@ BraceWrapping:
   AfterControlStatement: false
   AfterClass: false
   AfterNamespace: false
-  AfterStruct: false
   AfterUnion: false
   BeforeElse: true
   BeforeCatch: true

[Nerixyz]

Should've checked #1586.