libc: Remove crti.o and crtn.o

Looks like these are now provided by the compiler.

libc/CMakeLists.txt

@@ -22,18 +22,6 @@ add_custom_command(
     COMMAND "${CMAKE_COMMAND}" -E copy $<TARGET_OBJECTS:crt0> ${LUNA_BASE}/usr/lib/crt0.o
 )
 
-add_library(crti STATIC src/arch/${ARCH}/crti.S)
-add_custom_command(
-    TARGET crti
-    COMMAND "${CMAKE_COMMAND}" -E copy $<TARGET_OBJECTS:crti> ${LUNA_BASE}/usr/lib/crti.o
-)
-
-add_library(crtn STATIC src/arch/${ARCH}/crtn.S)
-add_custom_command(
-    TARGET crtn
-    COMMAND "${CMAKE_COMMAND}" -E copy $<TARGET_OBJECTS:crtn> ${LUNA_BASE}/usr/lib/crtn.o
-)
-
 add_library(bare_libc STATIC ${SOURCES})
 
 target_link_libraries(bare_libc PUBLIC luna)
@@ -52,7 +40,7 @@ add_custom_target(libc
     COMMAND ${CMAKE_AR} -rcs ${CMAKE_CURRENT_BINARY_DIR}/libc.a *.o
     COMMAND rm *.o
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    DEPENDS bare_libc luna crti crtn crt0
+    DEPENDS bare_libc luna crt0
 )
 
 add_custom_command(

libc/src/arch/x86_64/crti.S

@@ -1,13 +0,0 @@
-.section .init
-.global _init
-_init:
-   push %rbp
-   movq %rsp, %rbp
-   /* gcc will nicely put the contents of crtbegin.o's .init section here. */
-
-.section .fini
-.global _fini
-_fini:
-   push %rbp
-   movq %rsp, %rbp
-   /* gcc will nicely put the contents of crtbegin.o's .fini section here. */

libc/src/arch/x86_64/crtn.S

@@ -1,9 +0,0 @@
-.section .init
-   /* gcc will nicely put the contents of crtend.o's .init section here. */
-   popq %rbp
-   ret
-
-.section .fini
-   /* gcc will nicely put the contents of crtend.o's .fini section here. */
-   popq %rbp
-   ret