Partially revert "Make build matrix output a bit nicer."

I have found a better solution.

The change to check/cross sign is not reverted.

This partially reverts commit 3797d4eb03.

Signed-off-by: Timothy Gu <timothygu99@gmail.com>

Makefile

@@ -601,29 +601,27 @@ build-matrix.html: $(foreach PKG,$(PKGS), $(TOP_DIR)/src/$(PKG).mk)
 	@echo '</tr>'                           >> $@
 	@echo '</thead>'                        >> $@
 	@echo '<tbody>'                         >> $@
-	@{ $(foreach PKG,$(PKGS),                    \
+	@$(foreach PKG,$(PKGS),                      \
 	    $(eval $(PKG)_VIRTUAL := $(true))        \
 	    $(eval $(PKG)_BUILD_ONLY := $(true))     \
-	    echo '<tr>                               \
-	        <th class="row">$(PKG)</th>          \
+	    echo '<tr>'                         >> $@; \
+	    echo '<th class="row">$(PKG)</th>'  >> $@; \
 	    $(foreach TARGET,$(MXE_TARGET_LIST),     \
 	        $(if $(value $(call LOOKUP_PKG_RULE,$(PKG),BUILD,$(TARGET))), \
 	            $(eval $(TARGET)_PKGCOUNT := $(call inc,$($(TARGET)_PKGCOUNT))) \
 	            $(eval $(PKG)_VIRTUAL := $(false)) \
 	            $(eval $(PKG)_BUILD_ONLY := $(false)) \
-	            <td class="supported">&#x2713;</td>,            \
-	            <td class="unsupported">&#x2717;</td>))         \
+	            echo '<td class="supported">&#x2713;</td>'   >> $@;,   \
+	            echo '<td class="unsupported">&#x2717;</td>' >> $@;))  \
 	    $(if $(call set_is_member,$(PKG),$(BUILD_PKGS)),        \
 	        $(eval BUILD_PKGCOUNT := $(call inc,$(BUILD_PKGCOUNT))) \
 	        $(eval $(PKG)_VIRTUAL := $(false))   \
-	        <td class="supported">&#x2713;</td>, \
-	        <td class="unsupported">&#x2717;</td>) \
-	        </tr>';                              \
+	        echo '<td class="supported">&#x2713;</td>'   >> $@;,       \
+	        echo '<td class="unsupported">&#x2717;</td>' >> $@;)       \
 	    $(if $($(PKG)_VIRTUAL),                  \
 	        $(eval VIRTUAL_PKGCOUNT := $(call inc,$(VIRTUAL_PKGCOUNT)))) \
 	    $(if $($(PKG)_BUILD_ONLY),               \
-	        $(eval BUILD_ONLY_PKGCOUNT := $(call inc,$(BUILD_ONLY_PKGCOUNT))))) \
-	} >> $@
+	        $(eval BUILD_ONLY_PKGCOUNT := $(call inc,$(BUILD_ONLY_PKGCOUNT)))))
 	@echo '<tr>'                            >> $@
 	@# TOTAL_PKGCOUNT = ( PKGS - VIRTUAL ) - BUILD_ONLY
 	$(eval TOTAL_PKGCOUNT :=                     \