Revert "add a .clang-format file (#9154)" (#9172)

I thought git would be smart enough to understand all the whitespace changes but even with all the flags I know to make it ignore theses it still blows up if there are identical changes on both sides.

I have a solution but it require creating a new commit at the merge base for each conflicting PR and merging it into develop.

I don't think blowing up all PRs is worth for now, maybe if we can coordinate this for V3 let's say.

This reverts commit 0d11331d18.

src/detect/ScanI2CConsumer.h

@@ -3,10 +3,11 @@
 #include "ScanI2C.h"
 #include <stddef.h>
 
-class ScanI2CConsumer {
-public:
-  ScanI2CConsumer();
-  virtual void i2cScanFinished(ScanI2C *i2cScanner) = 0;
+class ScanI2CConsumer
+{
+  public:
+    ScanI2CConsumer();
+    virtual void i2cScanFinished(ScanI2C *i2cScanner) = 0;
 };
 
 void ScanI2CCompleted(ScanI2C *i2cScanner);