Merge bitcoin/bitcoin#21708: build: Drop pointless sed commands

f52fafc build: Drop pointless sed commands (Hennadii Stepanov)

Pull request description:

  Since moving to Autotools build system (35b8af9, #2943, 2013-09), tag strings created by Qt specialized compilers ([uic](https://doc.qt.io/qt-5/uic.html), [moc](https://doc.qt.io/qt-5/moc.html), [rcc](https://doc.qt.io/qt-5/rcc.html)) were being removed.

  A bit later (70c71c5, #4241, 2014-06) this rule was dropped for the uic, and since then all of the generated `ui_*.h` files contain the following string:
  ```
  ** Created by: Qt User Interface Compiler version 5.12.8
  ```

  Such strings do not contain any timestamps, and cannot cause any non-determinism. The removing of them seems pointless.

  Diffs for some files:
  ```diff
  --- master/intro.moc
  +++ pr/intro.moc
  @@ -1,6 +1,7 @@
   /****************************************************************************
   ** Meta object code from reading C++ file 'intro.cpp'
   **
  +** Created by: The Qt Meta Object Compiler version 67 (Qt 5.12.8)
   **
   ** WARNING! All changes made in this file will be lost!
   *****************************************************************************/
  ```
  ```diff
  --- master/moc_addressbookpage.cpp
  +++ pr/moc_addressbookpage.cpp
  @@ -1,6 +1,7 @@
   /****************************************************************************
   ** Meta object code from reading C++ file 'addressbookpage.h'
   **
  +** Created by: The Qt Meta Object Compiler version 67 (Qt 5.12.8)
   **
   ** WARNING! All changes made in this file will be lost!
   *****************************************************************************/
  ```
  ```diff
  --- master/qrc_bitcoin.cpp
  +++ pr/qrc_bitcoin.cpp
  @@ -1,6 +1,7 @@
   /****************************************************************************
   ** Resource object code
   **
  +** Created by: The Resource Compiler for Qt version 5.12.8
   **
   ** WARNING! All changes made in this file will be lost!
   *****************************************************************************/
  ```

ACKs for top commit:
  laanwj:
    ACK f52fafc

Tree-SHA512: 31f5c19b37645b4914f17d8c234b7ae8781a0499c4b250ffef07d70b7552954fb682f58a75d76162f98ab5e1667288b3a041df2705573fb00523e87b9c1fd47f

src/Makefile.qt.include

@@ -365,14 +365,12 @@ translate: $(srcdir)/qt/bitcoinstrings.cpp $(QT_FORMS_UI) $(QT_FORMS_UI) $(BITCO
 $(QT_QRC_LOCALE_CPP): $(QT_QRC_LOCALE) $(QT_QM)
 	@test -f $(RCC)
 	@cp -f $< $(@D)/temp_$(<F)
-	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(RCC) -name bitcoin_locale $(@D)/temp_$(<F) | \
-	  $(SED) -e '/^\*\*.*Created:/d' -e '/^\*\*.*by:/d' > $@
+	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(RCC) -name bitcoin_locale $(@D)/temp_$(<F) > $@
 	@rm $(@D)/temp_$(<F)
 
 $(QT_QRC_CPP): $(QT_QRC) $(QT_FORMS_H) $(RES_FONTS) $(RES_ICONS) $(RES_ANIMATION)
 	@test -f $(RCC)
-	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(RCC) -name bitcoin $< | \
-	  $(SED) -e '/^\*\*.*Created:/d' -e '/^\*\*.*by:/d' > $@
+	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(RCC) -name bitcoin $< > $@
 
 CLEAN_QT = $(nodist_qt_libbitcoinqt_a_SOURCES) $(QT_QM) $(QT_FORMS_H) qt/*.gcda qt/*.gcno qt/temp_bitcoin_locale.qrc
 
@@ -403,12 +401,10 @@ ui_%.h: %.ui
 	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(UIC) -o $@ $< || (echo "Error creating $@"; false)
 
 %.moc: %.cpp
-	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(MOC) $(DEFAULT_INCLUDES) $(QT_INCLUDES_UNSUPPRESSED) $(MOC_DEFS) $< | \
-	  $(SED) -e '/^\*\*.*Created:/d' -e '/^\*\*.*by:/d' > $@
+	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(MOC) $(DEFAULT_INCLUDES) $(QT_INCLUDES_UNSUPPRESSED) $(MOC_DEFS) $< > $@
 
 moc_%.cpp: %.h
-	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(MOC) $(DEFAULT_INCLUDES) $(QT_INCLUDES_UNSUPPRESSED) $(MOC_DEFS) $< | \
-	  $(SED) -e '/^\*\*.*Created:/d' -e '/^\*\*.*by:/d' > $@
+	$(AM_V_GEN) QT_SELECT=$(QT_SELECT) $(MOC) $(DEFAULT_INCLUDES) $(QT_INCLUDES_UNSUPPRESSED) $(MOC_DEFS) $< > $@
 
 %.qm: %.ts
 	@test -f $(LRELEASE)