Revert "preen"

This reverts commit da9a7c41d1.

esphome/core/macros.h

@@ -6,14 +6,3 @@
 #ifdef USE_ARDUINO
 #include <Arduino.h>
 #endif
-
-// Portable PROGMEM string macro
-// On ESP8266, PSTR() stores strings in flash memory
-// On other platforms, it's a no-op
-#ifndef ESPHOME_PSTR
-#ifdef USE_ESP8266
-#define ESPHOME_PSTR(x) PSTR(x)
-#else
-#define ESPHOME_PSTR(x) (x)
-#endif
-#endif

esphome/cpp_helpers.py

@@ -76,8 +76,11 @@ async def register_component(var, config):
             "Error while finding name of component, please report this", exc_info=e
         )
     if name is not None:
-        # Use ESPHOME_PSTR macro which stores strings in PROGMEM on ESP8266, no-op on other platforms
-        add(var.set_component_source(RawExpression(f'ESPHOME_PSTR("{name}")')))
+        # On ESP8266, store component source strings in PROGMEM to save RAM
+        if CORE.is_esp8266:
+            add(var.set_component_source(RawExpression(f'PSTR("{name}")')))
+        else:
+            add(var.set_component_source(name))
 
     add(App.register_component(var))
     return var