Remove SwiftSyntax Preset

Preset was added when cherry-picking the commit from master, we don't need this preset on swift-5.0-branch.

Author: shahmishal

utils/build-presets.ini

@@ -1684,16 +1684,6 @@ swift-include-tests=0
 darwin-deployment-version-ios=10.0
 darwin-crash-reporter-client=1
 
-[preset: install_swiftsyntax_parser]
-release
-lto
-no-assertions
-build-libparser-only
-verbose-build
-darwin-install-extract-symbols
-install-swift
-
-
 #===------------------------------------------------------------------------===#
 # Linux corelibs foundation preset
 #===------------------------------------------------------------------------===#
@@ -1703,4 +1693,4 @@ mixin-preset=buildbot_linux
 debug-foundation
 
 [preset: buildbot_linux,foundation=release]
-mixin-preset=buildbot_linux
+mixin-preset=buildbot_linux