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.

variants/nrf52840/heltec_mesh_node_t114/variant.h

@@ -86,8 +86,8 @@ extern "C" {
  * Buttons
  */
 #define PIN_BUTTON1 (32 + 10)
-// #define PIN_BUTTON2 (0 + 18)      // 0.18 is labeled on the board as RESET but we configure it in the bootloader as a
-// regular GPIO
+// #define PIN_BUTTON2 (0 + 18)      // 0.18 is labeled on the board as RESET but we configure it in the bootloader as a regular
+// GPIO
 
 /*
 No longer populated on PCB
@@ -145,7 +145,8 @@ No longer populated on PCB
 #define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
 
-#define PIN_SPI1_MISO ST7789_MISO // FIXME not really needed, but for now the SPI code requires something to be defined, pick an used GPIO
+#define PIN_SPI1_MISO                                                                                                            \
+    ST7789_MISO // FIXME not really needed, but for now the SPI code requires something to be defined, pick an used GPIO
 #define PIN_SPI1_MOSI ST7789_SDA
 #define PIN_SPI1_SCK ST7789_SCK