Remove qmake build files

Removes qmake as a build system for building Qt Creator itself.
Keep them for some tests that are not completely moved to CMake yet.

Change-Id: I846c6ef65626b6dfae6375fdc85d00677aa8c2fb
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/glsl/glsl-lib.pri

@@ -1,9 +0,0 @@
-HEADERS += $$PWD/glsl.h $$PWD/glsllexer.h $$PWD/glslparser.h $$PWD/glslparsertable_p.h $$PWD/glslast.h \
-    $$PWD/glslastvisitor.h $$PWD/glslengine.h $$PWD/glslmemorypool.h $$PWD/glslastdump.h \
-    $$PWD/glslsemantic.h $$PWD/glsltype.h $$PWD/glsltypes.h $$PWD/glslsymbol.h $$PWD/glslsymbols.h
-SOURCES += $$PWD/glslkeywords.cpp $$PWD/glslparser.cpp $$PWD/glslparsertable.cpp \
-    $$PWD/glsllexer.cpp $$PWD/glslast.cpp \
-    $$PWD/glslastvisitor.cpp $$PWD/glslengine.cpp $$PWD/glslmemorypool.cpp $$PWD/glslastdump.cpp \
-    $$PWD/glslsemantic.cpp $$PWD/glsltype.cpp $$PWD/glsltypes.cpp $$PWD/glslsymbol.cpp $$PWD/glslsymbols.cpp
-
-DISTFILES = $$PWD/glsl.g

src/libs/glsl/glsl.pro

@@ -1,5 +0,0 @@
-DEFINES += \
-    GLSL_LIBRARY
-
-include(../../qtcreatorlibrary.pri)
-include(glsl-lib.pri)

src/libs/glsl/glsl_dependencies.pri

@@ -1,3 +0,0 @@
-QTC_LIB_NAME = GLSL
-QTC_LIB_DEPENDS += \
-    utils