remove includes if not necessary

[drhideg]

This patch can save about 700 byte RAM and about 14kB Flash space (compiled with ESP8266):

REPO defaults:

    RAM:   [=====     ]  52.3% (used 42860 bytes from 81920 bytes)
    Flash: [=====     ]  51.5% (used 526888 bytes from 1023984 bytes)
    Compression reduced firmware size by 71% (was 531040 bytes, now 379676 bytes)

REPO check/unckeck energysensors and displays /still use USE_I2C, USE_SPI, USE_ENERGY_SENSOR/:

    RAM:   [=====     ]  53.2% (used 43548 bytes from 81920 bytes)
    Flash: [=====     ]  52.8% (used 540852 bytes from 1023984 bytes)
    Compression reduced firmware size by 71% (was 545008 bytes, now 389246 bytes)

PATCH defaults:

    RAM:   [=====     ]  52.3% (used 42860 bytes from 81920 bytes)
    Flash: [=====     ]  51.5% (used 526888 bytes from 1023984 bytes)
    Compression reduced firmware size by 71% (was 531040 bytes, now 379676 bytes)

PATCH check/unckeck energysensors and displays /remove USE_I2C, USE_SPI, USE_ENERGY_SENSOR/:

    RAM:   [=====     ]  52.3% (used 42860 bytes from 81920 bytes)
    Flash: [=====     ]  51.5% (used 526888 bytes from 1023984 bytes)
    Compression reduced firmware size by 71% (was 531040 bytes, now 379673 bytes)

[bovirus]

@benzino77

Could pelase consider if leave it open or not?