core: remove raspi makefile target

Raspi build is still available when ENV variable is set,
but no need to bloat the Makefile/SConscript file

core/Makefile

@@ -108,9 +108,6 @@ build_unix: res ## build unix port
 build_unix_frozen: res build_cross ## build unix port with frozen modules
 	$(SCONS) CFLAGS="$(CFLAGS)" $(UNIX_BUILD_DIR)/micropython $(UNIX_PORT_OPTS) TREZOR_EMULATOR_FROZEN=1
 
-build_unix_raspi: res ## build unix port for Raspberry Pi
-	$(SCONS) CFLAGS="$(CFLAGS)" $(UNIX_BUILD_DIR)/micropython $(UNIX_PORT_OPTS) TREZOR_EMULATOR_RASPI=1
-
 build_cross: ## build mpy-cross port
 	$(MAKE) -C vendor/micropython/mpy-cross $(CROSS_PORT_OPTS)
 

core/SConscript.unix

@@ -134,8 +134,6 @@ SOURCE_MOD += [
     'embed/extmod/modtrezorui/modtrezorui.c',
     'embed/extmod/modtrezorui/qr-code-generator/qrcodegen.c',
 ]
-if ARGUMENTS.get('TREZOR_EMULATOR_RASPI', 0):
-    CPPDEFINES_MOD += ['TREZOR_EMULATOR_RASPI']
 if ARGUMENTS.get('TREZOR_EMULATOR_FROZEN', 0):
     CPPDEFINES_MOD += ['TREZOR_EMULATOR_FROZEN']