Get rid of libssh2 embedding

It was added as a workaround while the project had code to use WinCNG
but had not made a release with it. There is now a release of libssh2
with WinCNG support, so this option is redundant. Let's get rid of it
before people start liking it too much.

CMakeLists.txt

@@ -58,10 +58,6 @@ IF(MSVC)
 	# are linking statically
 	OPTION( STATIC_CRT		"Link the static CRT libraries"	ON  )
 
-	# If you want to embed a copy of libssh2 into libgit2, pass a
-	# path to libssh2
-	OPTION( EMBED_SSH_PATH		"Path to libssh2 to embed (Windows)" OFF )
-
 	ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
 	ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)
 	ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_DEPRECATE)
@@ -163,13 +159,6 @@ IF (COREFOUNDATION_FOUND)
 ENDIF()
 
 
-IF (WIN32 AND EMBED_SSH_PATH)
-	FILE(GLOB SRC_SSH "${EMBED_SSH_PATH}/src/*.c")
-	INCLUDE_DIRECTORIES("${EMBED_SSH_PATH}/include")
-	FILE(WRITE "${EMBED_SSH_PATH}/src/libssh2_config.h" "#define HAVE_WINCNG\n#define LIBSSH2_WINCNG\n#include \"../win32/libssh2_config.h\"")
-	ADD_DEFINITIONS(-DGIT_SSH)
-ENDIF()
-
 IF (WIN32 AND WINHTTP)
 	ADD_DEFINITIONS(-DGIT_WINHTTP)
 	INCLUDE_DIRECTORIES(deps/http-parser)
@@ -480,7 +469,7 @@ ELSE()
 ENDIF()
 
 # Compile and link libgit2
-ADD_LIBRARY(git2 ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SSH} ${SRC_SHA1} ${WIN_RC})
+ADD_LIBRARY(git2 ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1} ${WIN_RC})
 TARGET_LINK_LIBRARIES(git2 ${SECURITY_DIRS})
 TARGET_LINK_LIBRARIES(git2 ${COREFOUNDATION_DIRS})
 TARGET_LINK_LIBRARIES(git2 ${SSL_LIBRARIES})
@@ -549,7 +538,7 @@ IF (BUILD_CLAR)
 		${CLAR_PATH}/clar.c
 		PROPERTIES OBJECT_DEPENDS ${CLAR_PATH}/clar.suite)
 
-	ADD_EXECUTABLE(libgit2_clar ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_CLAR} ${SRC_TEST} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SSH} ${SRC_SHA1})
+	ADD_EXECUTABLE(libgit2_clar ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_CLAR} ${SRC_TEST} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1})
 
 	TARGET_LINK_LIBRARIES(libgit2_clar ${COREFOUNDATION_DIRS})
 	TARGET_LINK_LIBRARIES(libgit2_clar ${SECURITY_DIRS})