Revert: flashRead / flashWrite supports encrypted flash

Reading and writing to encrypted flash has to be aligned to 16-bytes. Also NAND way of writing (i.e. flipping 1s to 0s) will not work with spi_flash_write_encrypted. Note: spi_flash_read_encrypted will always try to decrypt data, even if it wasn't encrypted in the first place.

Author: arcao

cores/esp32/Esp.cpp

@@ -202,12 +202,13 @@ bool EspClass::flashEraseSector(uint32_t sector)
     return spi_flash_erase_sector(sector) == ESP_OK;
 }
 
+// Warning: These functions do not work with encrypted flash
 bool EspClass::flashWrite(uint32_t offset, uint32_t *data, size_t size)
 {
-    return spi_flash_write_encrypted(offset, (uint32_t*) data, size) == ESP_OK;
+    return spi_flash_write(offset, (uint32_t*) data, size) == ESP_OK;
 }
 
 bool EspClass::flashRead(uint32_t offset, uint32_t *data, size_t size)
 {
-    return spi_flash_read_encrypted(offset, (uint32_t*) data, size) == ESP_OK;
+    return spi_flash_read(offset, (uint32_t*) data, size) == ESP_OK;
 }